If you liked
D.Gray-man
|
...then you might like
Soul Eater
|
Essentially the same anime, but with different moods. If you're looking for a dark shounen with a strange sense of humour, D.Gray-man is for you. If you want a lighthearted shounen with a relatively raunchy sense of humour, go for Soul Eater. They are both action-centric anime about teenagers with unique weapons that are used to destroy corrupted souls. These anime also share similar flaws, in that they both have quite a bit of filler (Soul Eater especially).
If you liked
Steins;Gate
|
...then you might like
Mahou Shoujo Madoka★Magica
|
Both initially seem juvenile and routine, but evolve into a much darker and original being as the series progress. Both deal with repitition to obtain a desired result, and both inject new life into genres that were previously thought to be exhausted.
If you liked
Clannad: After Story
|
...then you might like
Steins;Gate
|
Both have incredibly well-developed characters, and deal with parallel dimensions. NOTE: Watch Clannad before watching After Story
If you liked
Higurashi no Naku Koro ni
|
...then you might like
Steins;Gate
|
Both are based off of visual novels and repetition is central to the advancement and understanding of the plot of the show.
If you liked
Durarara!!
|
...then you might like
K
|
Both are slower paced anime with multiple meandering plots that attempt to come together. In my opinion, Drrrr!! does so successfully, whereas K...not so much.