If you liked
Gantz
|
...then you might like
Blood-C
|
Both essentially feature the same episodic development for the majority of the anime: school life moments -> monsters appear -> extras get dismembered in a veritable fountain of blood, splatter and gore for half the episode -> main characters finally decide to fight monster and win within a few minutes -> wash rinse repeat. Blood-C has a somewhat more sensible ending, not necessarily better though.
If you liked
Mushishi
|
...then you might like
Kino no Tabi: The Beautiful World
|
Episodic nature with a detached main character, that functions more as a narrator or plot device, than a protagonist.
If you liked
NHK ni Youkoso!
|
...then you might like
Yojouhan Shinwa Taikei
|
Welcome to the NHK is far more depressing than Yojouhan Shinwa Taikei while the later adds a smidgen of bizzaro metaphysics to the later episodes. However they both revolve around a group of oddball people loafing around while helping the main character deal with the failures of his life, in their own way. Not always succesfully.