Hmmm ... no idea what you've seen, but here's a list of some series that got a good laugh out of me:
School Rumble
Ouran High School Host Club
Welcome to the NHK!
Kampfer
Girl's High
ToLove Ru
Amaenaide Yo! (English title is Ah! My Buddha)
Maria†Holic
History's Strongest Disciple Kenichi
Take your pick
