If you liked
Naruto
|
...then you might like
Kekkaishi
|
Very similar humour, main character, who cannot concentrate on fight, but who have amazing amount of strength, hand techniques and much more...
If you liked
Zero no Tsukaima
|
...then you might like
Hayate no Gotoku!
|
Very similar in many ways. First, in both of them main character (a male, of course) was "sucked" into other world... In Zero it's a magic, alternative world, and in Hayate it's simply the world of rich people. Second, Hayate's personality is very, very similar to Saito's. Third, the main male characters are both poor, and they have to protect very rich girl, who starts to love them... And the last - same seiyuu. Nagi = Louise.
If you liked
Higurashi no Naku Koro ni
|
...then you might like
School Days
|
They both have similar type of psycho-horror and one very, very dangerous yandere girl...
If you liked
Hayate no Gotoku!
|
...then you might like
Seto no Hanayome
|
Very similar graphic style and sense of humour... Yea, it's true, Seto have a very-offensive-sex-gags-based humour, when Hayate is more like parody, but if you like Seto, you will love Hayate for sure.
If you liked
One Piece
|
...then you might like
Bleach
|
Similar type of humour and action, good-only-for-fight-but-a-very-good-guy main char.