Kateikyoushi Hitman Reborn! if the mafia interests you in anyway, or if you just want some comical nonsense
Flame of Recca for a Yu-Yu Hakusho-esque type 90s manga. I recommend reading the manga; the anime never finished -.-
Lucky Star for the slice of life anime. no plot, but still entertaining
Rave Master for an epic adventure & plot.
2x2 = Shinobuden for random comedy & implied girl love
1/2 Prince for an anime about a virtual reality video game. NOTE: currently only a manga
Tenchi Muyo! really can't describe the awesomeness xD
Death Metal City for comedy & metalheads :P
Rurouni Kenshin for a samurai story at its finest
Inuyasha for a fuedal fairy tale (redundant description, i know ^^' )
Excel Saga for randomness & 90s parodies. strongly recommend!
Fairy Tail for something made by the creator of Rave Master but looks like One Piece. the anime recently started. the manga is strongly recommended as I've not seen the anime yet.
The Neo Armstrong Cyclone Jet Armstrong Canon of Pokemon
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