If you liked
Seikai no Monshou
|
...then you might like
Heroic Age
|
Space. People. Multiple people. Humanoid races battling each other. What's not to like?
If you liked
Seikai no Monshou
|
...then you might like
Ginga Eiyuu Densetsu
|
These are space operas about ships and people, so you'll like either, though LotGH is a bit broader in scope while SnM deals with the main characters in a more personal matter. Also, each episode starts with an old dude talking about a planet or government.
If you liked
School Rumble
|
...then you might like
Seto no Hanayome
|
Both of these have just absurd jokes and random parodies thrown in to the mix, as well as both being extremely funny.
If you liked
Zero no Tsukaima
|
...then you might like
Toradora!
|
If you like psychotic tsundere girls in short skirts who beat the crap out of guys, then you'll just love each of these.
If you liked
School Rumble
|
...then you might like
Toradora!
|
They have the exact same sort of situation, setup, and plot - at least initially. Toradora has better art and School Rumble has way more jokes, so bear that in mind.
If you liked
School Rumble
|
...then you might like
Shijou Saikyou no Deshi Kenichi
|
The comedy in both of these is just absolutely crazy, so if you like the slapstick in one, you'll like the other.
If you liked
School Rumble
|
...then you might like
Full Metal Panic!
|
Both of these are hilarious high school slapstick comedies, though FMP has mecha action thrown in and School Rumble has a big love dodecahedron sub plot.
If you liked
Needless
|
...then you might like
Ichiban Ushiro no Daimaou
|
Action, jokes, and extremely butchered religious symbolism all rolled into one.
If you liked
Zero no Tsukaima
|
...then you might like
Ichiban Ushiro no Daimaou
|
Both take place at a magical academy and follow the usual harem plots, mixed in with some prophecy stuff and whatnot.
If you liked
Rosario to Vampire
|
...then you might like
Ichiban Ushiro no Daimaou
|
Magical harem hijinks at a school where there's a surprising lack of supervision.
If you liked
Zero no Tsukaima
|
...then you might like
Rosario to Vampire
|
You have a run-of-the-mill human wind up in a school for crazy magical folks, and he has to figure out how to survive. Meanwhile, the harem builds up around them, and then slapstick abounds.
If you liked
Kono Minikuku mo Utsukushii Sekai
|
...then you might like
Sora no Otoshimono
|
An alien chick with very little in the way of clothing drops from the sky, and lo and behold, a teenager finds her and the go off into their happy little harem.
If you liked
Chobits
|
...then you might like
Sora no Otoshimono
|
A guy's got a humanoid with limited emotions living with him, and they do some typical comedy as she develops mentally.
If you liked
DearS
|
...then you might like
Sora no Otoshimono
|
A dude has an alien slave with a metal ring around her neck pledge to serve him, and his female childhood friend isn't too thrilled.
If you liked
Darker than Black: Kuro no Keiyakusha
|
...then you might like
Higashi no Eden
|
Both of these take place in a strange version of Japan that's basically our own, but there's one big thing that affects the country - even the world - with the protagonists smack dab right in the middle of things.
If you liked
Darker than Black: Kuro no Keiyakusha
|
...then you might like
Phantom: Requiem for the Phantom
|
Dude in a mask that works for a shady organization goes around killing the shit out of people.
If you liked
Code Geass: Hangyaku no Lelouch
|
...then you might like
Darker than Black: Kuro no Keiyakusha
|
If you like one, you'll like the other, but not only that, both are about masked men with super powers taking on large governmental entities.
If you liked
Elfen Lied
|
...then you might like
Highschool of the Dead
|
Both of these take a serious premise, like zombies or mutants, and then throw in an incredibly unnecessary level of fanservice.
If you liked
Cowboy Bebop
|
...then you might like
Black Lagoon: The Second Barrage
|
Bunch of mercenaries/bounty hunters on a cool ship going around causing things to explode.
If you liked
Koukyoushihen Eureka Seven
|
...then you might like
Bounen no Xamdou
|
So... these have pretty similar themes, styles, and whatnot (same makers, after all), and the plots could also be called similar, what with a dumb guy who happens to land on a cool airship with a crazy crew and a strange girl with short colored hair that has jewelery adorning a right strand of her hair, and then they fly around having to battle ancient evils and conspiracies and crap like that.
If you liked
Itazura na Kiss
|
...then you might like
Kaichou wa Maid-sama!
|
I can't think of a way to get into specifics without spoiling something, so I'm just going to say they are pretty similar in terms of the jokes they make.
If you liked
Code Geass: Hangyaku no Lelouch
|
...then you might like
Needless
|
If you like battles, conspiracies and explosions, these are like the Citizen Kane of blowing shit up.
If you liked
Ranma ½
|
...then you might like
Shijou Saikyou no Deshi Kenichi
|
Both shows involve a guy and his romantic interest practicing martial arts, but also involve lots comedy, especially of the slapstick variety. Lots and lots of slapstick.
If you liked
Shijou Saikyou no Deshi Kenichi
|
...then you might like
Needless
|
Both shows are pretty humorously crafted shows where people engage in some sort of martial arts against each other, and you're sure to like both.
If you liked
Seihou Bukyou Outlaw Star
|
...then you might like
Needless
|
Both of these have a really similar sort of atmosphere, I can't really put my finger on it, but I'm pretty sure it has to do with the art, the futuristic Western setting, and the comedy thrown in to each episode.
If you liked
Sunabouzu
|
...then you might like
Needless
|
Fighting in the desert, while still managing to cram in fanservice all over the place.
If you liked
Trigun
|
...then you might like
Sunabouzu
|
A lone wanderer going around and beating the crap out of people in a desert environment.
If you liked
Trigun
|
...then you might like
Needless
|
If you like post-apocalyptic fiction, then you'll like both shows.
If you liked
Tengen Toppa Gurren Lagann
|
...then you might like
Needless
|
Blowing stuff up, drilling through stuff, calling your moves, implausibly skimpy outfits, all while fighting for survival.
If you liked
Elfen Lied
|
...then you might like
Baccano!
|
Both of these shows tend to feature someone being gruesomely murdered, and then a quick cut to something extremely cheery.