I have a lot of anime but my list of should sees are:
Bleach
DBZ
Samurai 7
Vampire Hunter D (Bloodlust) Must See
Naruto (sometimes good sometimes not so much)
Appleseed
Gundam Wing and GW Endless Waltz movie.
Karas
Cowboy Bebop (all time favorite) series and Movie
Samurai X Trust and Betrayal movies
Gantz (good if you like horror)
Outlaw star
Samurai Champloo
Trigun
if you like Gundam 8th MS team was really good
FLCL (only 6 episodes but a lot of fun to watch)
Robotech
...I think that's it