GuessAnime.

1. Tengen Toppa Gurren Lagann

Simon and Kamina were born and raised in a deep, underground village, hidden from the fabled surface. Kamina is a free-spirited loose cannon bent on making a name for himself, while Simon is a timid young boy with no real aspirations. One day while excavating the earth, Simon stumbles upon a mysterious object that turns out to be the ignition key to an ancient artifact of war, which the duo dubs Lagann. Using their new weapon, Simon and Kamina fend off a surprise attack from the surface with the help of Yoko Littner, a hot-blooded redhead wielding a massive gun who wanders the world above.

In the aftermath of the battle, the sky is now in plain view, prompting Simon and Kamina to set off on a journey alongside Yoko to explore the wastelands of the surface. Soon, they join the fight against the "Beastmen," humanoid creatures that terrorize the remnants of humanity in powerful robots called "Gunmen." Although they face some challenges and setbacks, the trio bravely fights these new enemies alongside other survivors to reclaim the surface, while slowly unraveling a galaxy-sized mystery.

Gurren Lagann is finished and has 27 Episodes. It is also Known as: 天元突破グレンラガン, Tengen Toppa Gurren-Lagann, Making Break-Through Gurren Lagann, Heavenly Breakthrough Gurren Lagann, TTGL, Gurren Laggan

2. Dragon Ball Z

Five years after winning the World Martial Arts tournament, Gokuu is now living a peaceful life with his wife and son. This changes, however, with the arrival of a mysterious enemy named Raditz who presents himself as Gokuu's long-lost brother. He reveals that Gokuu is a warrior from the once powerful but now virtually extinct Saiyan race, whose homeworld was completely annihilated. When he was sent to Earth as a baby, Gokuu's sole purpose was to conquer and destroy the planet; but after suffering amnesia from a head injury, his violent and savage nature changed, and instead was raised as a kind and well-mannered boy, now fighting to protect others.

With his failed attempt at forcibly recruiting Gokuu as an ally, Raditz warns Gokuu's friends of a new threat that's rapidly approaching Earth—one that could plunge Earth into an intergalactic conflict and cause the heavens themselves to shake. A war will be fought over the seven mystical dragon balls, and only the strongest will survive in Dragon Ball Z.

Dragon Ball Z is finished and has 291 Episodes. It is also Known as: ドラゴンボールZ, DBZ, Dragonball Z

3. Gintama

The Amanto, aliens from outer space, have invaded Earth and taken over feudal Japan. As a result, a prohibition on swords has been established, and the samurai of Japan are treated with disregard as a consequence.

However one man, Gintoki Sakata, still possesses the heart of the samurai, although from his love of sweets and work as a yorozuya, one might not expect it. Accompanying him in his jack-of-all-trades line of work are Shinpachi Shimura, a boy with glasses and a strong heart, Kagura with her umbrella and seemingly bottomless stomach, as well as Sadaharu, their oversized pet dog. Of course, these odd jobs are not always simple, as they frequently have run-ins with the police, ragtag rebels, and assassins, oftentimes leading to humorous but unfortunate consequences.

Who said life as an errand boy was easy?

Gintama is finished and has 201 Episodes. It is also Known as: 銀魂, Gin Tama, Silver Soul, Yorinuki Gintama-san

4. Bishoujo Senshi Sailor Moon

Tsukino Usagi is a 14-year-old girl in junior high. She's ditzy, whiny, and a crybaby. She often flunks her tests, and she is always scolded by her family. However after a bad day, Usagi is surprised to encounter a black cat that can talk! The cat, Luna, grants Usagi the power to transform into Sailor Moon, a fighter who is to save the world against the Dark Kingdom and its evil ruler, Queen Beryl.

Of course, Usagi can't do it alone, and there are others who will help her on the way...

Sailor Moon is finished and has 46 Episodes. It is also Known as: 美少女戦士セーラームーン, Pretty Soldier Sailor Moon

5. Trigun

Vash the Stampede is the man with a $$60,000,000 bounty on his head. The reason: he's a merciless villain who lays waste to all those that oppose him and flattens entire cities for fun, garnering him the title "The Humanoid Typhoon." He leaves a trail of death and destruction wherever he goes, and anyone can count themselves dead if they so much as make eye contact—or so the rumors say. In actuality, Vash is a huge softie who claims to have never taken a life and avoids violence at all costs.

With his crazy doughnut obsession and buffoonish attitude in tow, Vash traverses the wasteland of the planet Gunsmoke, all the while followed by two insurance agents, Meryl Stryfe and Milly Thompson, who attempt to minimize his impact on the public. But soon, their misadventures evolve into life-or-death situations as a group of legendary assassins are summoned to bring about suffering to the trio. Vash's agonizing past will be unraveled and his morality and principles pushed to the breaking point.

Trigun is finished and has 26 Episodes. It is also Known as: トライガン, Trigun

6. Tengen Toppa Gurren Lagann Movie 2: Lagann-hen

Seven years have passed after the battle of Teppelin... Humans have since reclaimed the surface of the earth and enjoy an unprecedented period of peace and prosperity. However, humanity's increasing population growth triggers the sudden emergence of an unknown, powerful enemy.

The fearsome, manipulative power of the mysterious Anti-Spiral proves too overwhelming for humans to even fight back. When everyone becomes desperate and loses hope, Team Dai-Gurren members reunite to stand up once again!

Gurren Lagann The Movie: The Lights in the Sky are Stars is a Movie. It is also Known as: 天元突破グレンラガン 螺巌篇, Tengen Toppa Gurren Lagann Movie 2

7. Tokyo Mew Mew

The story of Tokyo Mew Mew begins when the main protagonist, Ichigo Momomiya, attends an endangered species exhibit with her crush Masaya Aoyama. Their peaceful day takes a turn towards drastic when an earthquake strikes and Ichigo, as well as four other girls, are enveloped in a mysterious light. The next day, Ichigo begins to behave like a cat and learns from two scientists that her DNA has been combined with that of an iriomote cat as part of Project μ, which aims to protect the world from alien invaders!

Aliens have come to reclaim Earth in the name of their ancestors who inhabited the planet three million years ago. To get rid of the humans now inhabiting the planet, the aliens have released parasites that infect animals and turn them into monsters. With the DNA of the iriomote cat now inside her, Ichigo can transform into Mew Ichigo and use her powers to fight off the invaders. Ichigo will not have to fight alone, as the four other Mew Mews take to the stage and join in the battle to protect Earth.

Tokyo Mew Mew is finished and has 52 Episodes. It is also Known as: 東京ミュウミュウ, Mew Mew Power

8. Heaven's Lost Property

Ever since he was a child, Tomoki Sakurai has always woke up with tears after a dream of an angel. His childhood friend Sohara Mitsuki worries about this and decides to seek the help of Eishirou Sugata, an eccentric sky maniac. He concludes that Tomoki's dream is undoubtedly connected to what is known as the New World, a floating anomaly that scientists have failed to understand.

Recruiting the New World Discovery Club's first members, Eishirou schedules a time to meet up in order to observe the mystery in the sky. That day, Tomoki's peaceful life is changed forever when a strange girl falls from the sky and begins to call him master. Sora no Otoshimono follows the daily activities of the New World Discovery Club as they begin to learn more about the Angeloids that have arrived on Earth.

Heaven's Lost Property is finished and has 13 Episodes. It is also Known as: Sora no Otoshimono, そらのおとしもの, Lost Property of the Sky, Misplaced by Heaven

9. Redline

Every five years, an exhilarating race called Redline is held, and the universe's most anticipated competition has only one rule: that there are none. Racers are pushed to their absolute limit—a feeling that daredevil driver JP knows all too well. Having just qualified to participate in Redline, he is eager to battle against the other highly skilled drivers, particularly the beautiful rising star and the only other human that qualified, Sonoshee McLaren.

But this year's Redline may be far more dangerous than usual—it has been announced to take place on the planet Roboworld with its trigger-happy military and criminals who look to turn the race to their own advantage. However, the potential danger doesn't stop the racers; in fact, it only adds to the thrill. Relying solely on his vehicle's speed, JP prepares for the event to come, aiming to take first place in the biggest race of his life.

Redline is a Movie. It is also Known as: REDLINE, Red line

10. Dragon Ball Kai

Five years after the events of Dragon Ball, martial arts expert Gokuu is now a grown man married to his wife Chi-Chi, with a four-year old son named Gohan. While attending a reunion on Turtle Island with his old friends Master Roshi, Krillin, Bulma and others, the festivities are interrupted when a humanoid alien named Raditz not only reveals the truth behind Gokuu's past, but kidnaps Gohan as well.

With Raditz displaying power beyond anything Gokuu has seen before, he is forced to team up with his old nemesis, Piccolo, in order to rescue his son. But when Gokuu and Piccolo reveal the secret of the seven mystical wish-granting Dragon Balls to Raditz, he informs the duo that there is more of his race, the Saiyans, and they won’t pass up an opportunity to seize the power of the Dragon Balls for themselves.

These events begin the saga of Dragon Ball Kai, a story that finds Gokuu and his friends and family constantly defending the galaxy from increasingly more powerful threats. Bizarre, comical, heartwarming and threatening characters come together in a series of battles that push the powers and abilities of Gokuu and his friends beyond anything they have ever experienced.

Dragon Ball Z Kai is finished and has 97 Episodes. It is also Known as: ドラゴンボール改, Dragonball Kai, DBK, DB Kai, DBZ Kai

11. Tengen Toppa Gurren Lagann Movie 1: Gurren-hen

Animation studio Gainax presented a website for the release of a movie adaptation of the Tengen Toppa Gurren Lagann TV series in the fall of 2008. Both the original director and series script editor will return to work on the new project. Gainax will also be hosting four events to celebrate this occasion at this year's Tokyo International Anime Fair, featuring voice actors from the anime.

Gurren Lagann The Movie: Childhood's End is a Movie. It is also Known as: 天元突破グレンラガン 紅蓮篇, Gekijouban Tengen Toppa Gurren Lagann: Guren-hen, Tengen Toppa Gurren Lagann the Movie

12. To LOVE-Ru

Timid 16-year-old Rito Yuuki has yet to profess his love to Haruna Sairenji—a classmate and object of his infatuation since junior high. Sadly, his situation becomes even more challenging when one night, a mysterious, stark-naked girl crash-lands right on top of a bathing Rito.

To add to the confusion, Rito discovers that the girl, Lala Satalin Deviluke, is the crown princess of an alien empire and has run away from her home. Despite her position as the heiress to the most dominant power in the entire galaxy, Lala is surprisingly more than willing to marry the decidedly average Rito in order to avoid an unwanted political marriage.To LOVE-Ru depicts Rito's daily struggles with the bizarre chaos that begins upon the arrival of Lala. With an evergrowing legion of swooning beauties that continuously foil his attempted confessions to Haruna, To LOVE-Ru is a romantic comedy full of slapstick humor, sexy girls, and outlandishly lewd moments that defy the laws of physics.

To LOVE Ru is finished and has 26 Episodes. It is also Known as: To LOVEる -とらぶる-, To Love You, ToLoveRu, ToLoveRu Trouble, To-Rabu-Ru, ToRaBuRu

13. To LOVE-Ru Darkness 2nd

The dispassionate, transforming assassin Golden Darkness returns to peer deeper into the mysteries surrounding her new life, while a sinister Nemesis manipulates her younger sister Mea from the shadows. Along with their newly discovered mother, Tearju, this previously estranged family quickly becomes the center of everyone's attention. On the other hand, Princess Momo's Harem Plan stands on shaky ground amidst Rito's inability to confess to his longtime crush Haruna, who has grown feelings of her own.

But things aren't as peaceful as they seem; an evil force looms amidst the innocuous commotion, threatening to eclipse the love, happiness, and friendship of Rito and his harem. Only the light of love can hope to banish the shadow.

To LOVE Ru Darkness 2 is finished and has 14 Episodes. It is also Known as: To LOVEる -とらぶる- ダークネス2nd, To LOVE-Ru Trouble Darkness 2nd

14. Gantz

If you are chosen by the bizarre black sphere known as Gantz, you are already dead—yet you might be able to reclaim your mortality. First, Gantz demands that you undertake brutal missions of madness, killing aliens hidden among the population. It is your only chance and you have no choice. You must play this disturbing game. And if you die again—and you likely will—it's permanent.

Gantz is finished and has 13 Episodes. It is also Known as: ガンツ, GANTZ

15. Macross

After a mysterious spaceship crashes into Earth, humanity realizes that they are not alone. Fearing a potential threat from space, the world pushes aside their nationalism, conflicting interests, and cultural differences, unifying under the banner of the United Nations. The newly formed UN forces decide to repurpose the alien spacecraft, naming it SDF-1 Macross. Unfortunately, on the day of its maiden voyage, a fleet of spaceships belonging to a race of aliens known as Zentradi descend upon Earth, and the SDF-1 Macross, acting of its own accord, shoots down the incoming squadron, sparking an intergalactic war.

In an attempt to escape, the Macross tries to launch itself into the Moon's orbit, but the ship—as well as the city was in—is teleported to the far reaches of space. Caught up in the mess are Hikaru Ichijou, a free-spirited acrobatic pilot, and Minmay Lynn, an aspiring idol. Together, alongside Macross's bridge officer Misa Hayase, they experience an epic journey rife with grief and drama as they begin their trek back to Earth, facing with the cruelties of war along the way.

Macross is finished and has 36 Episodes. It is also Known as: Choujikuu Yousai Macross, 超時空要塞マクロス, Choujikuu Yousai Macross, Cho Jiku Yosai Macross, Super Dimensional Fortress Macross, SDF Macross, Robotech (U.S.)

16. Bishoujo Senshi Sailor Moon S

This season makes a turning point in the Sailor Moon story. The Sailor Senshi are confronted by a new enemy, the Death Busters. Rei had a premonition that this enemy would rule the world in an era called the Silence. To do this, the Death Busters need to find the three Talismans that would summon the Holy Grail. However, two mysterious Sailor Senshi, Sailor Uranus and Sailor Neptune, plan to find the Talismans before them... but without Sailor Moon's help.

Sailor Moon S is finished and has 38 Episodes. It is also Known as: 美少女戦士セーラームーン S, Pretty Soldier Sailor Moon S

17. To LOVE-Ru Darkness

As close encounters of the twisted kind between the residents of the planet Develuke and the inhabitants of Earth continue to escalate, the situation spirals even further out of control. When junior princesses Nana and Momo transferred into Earth School where big sister LaLa can keep an eye on them, things SHOULD be smooth sailing. But when Momo decides she'd like to "supplement" Rito's relationship with LaLa with a little "sisterly love," you know LaLa's not going to waste any time splitting harems. Unfortunately, it's just about that point that Yami, the Golden Darkness, enters the scene with all the subtleness of a supernova, along with an army of possessed high school students! All of which is certain to make Rito's life suck more than a black hole at the family picnic. Unless, of course, a certain semi-demonic princess can apply a little of her Develukean Whoop Ass to exactly that portion of certain other heavenly bodies!

To LOVE Ru Darkness is finished and has 12 Episodes. It is also Known as: To LOVEる -とらぶる- ダークネス, To LOVE-Ru Trouble Darkness, To-Love-Ru Darkness, ToLoveRu Darkness

18. Boku no Chikyuu wo Mamotte

Alice Sakaguchi once dreamt that she is another person living on the moon. The dream is so strange and so real that Alice can't stop thinking about it. She finds out that some of her classmates are having the same kind of dream. They soon discover that they had been seeing flashes of their past lives as a team of scientists on the moon. Alice and her friends then decide to find the other members and piece together what took place back then. Complications arise when they realize that everything that happened in their previous existence continue to haunt and affect their present lives.

Please Save My Earth is finished and has 6 Episodes. It is also Known as: ぼくの地球を守って, Bokutama, PSME

19. DearS

One year ago, a UFO containing 150 aliens crash-landed off the shores of Kasai. Because no one could fix their ship, the Japanese Government decided to bestow upon them the designation "DearS" and make them into Japanese citizens, teaching them the language, customs, and culture of Japan. However, in order for them to become more familiar with human society, a home-stay program has been enacted to allow them to mingle with other humans.

One misty morning, a truck carrying a capsule that housed one of these aliens ends up dropping it into the riverbank, releasing her from her confinement. She is eventually found by a high school student named Takeya Ikuhara, who saves her from being hit by a truck and takes pity on her, despite being extremely distrustful of their race and wanting nothing to do with them. Upon being named Ren, she imprints upon him as her "Master" and serves as his personal "Slave," leaving him with a "DearS" who wants to remain with him no matter what and bringing his ordinary, alien-free days to an end.

DearS is finished and has 12 Episodes. It is also Known as: ディアーズ, DearS