Azumanga Daioh (Best anime ever)

Chrno Crusade (Great anime, sad ending)

Dr. Slump (Although I haven't seen the anime, the manga is hilarous)

Excel Saga (Don't watch the last episode o_0)

Love Hina (Kinda fan servicy and anime ends where there are two more volumes of manga)

Magical Project S (Magical Girl parady with Tenchi characters)

Ranma 1/2 (The first few seasons are good, but after awhile it becomes Ranma gains new Martial Arte to defeat X)

Tenchi Muyo and Universe (Funny, but don't watch Tenchi in Tokyo)

YuYu Hakusho (Kinda long, but well worth it)