If you haven't seen them (and going back a long way):
* Berserk
* Ghost in the Shell: Stand Alone Complex
** Cowboy Bebop
! Read or Die
! Almost anything by Leiji Matsumoto
http://en.wikipedia.org/wiki/Leiji_Matsu…
* "Neo Tokyo," an anthology of shorts.
! Black Magic M66
! El Hazard (OAV, not TV)
** Evangelion (if you haven't seen it, get past the first 8 episodes and it gets interesting...actually when it came out the first 8 episodes were alright.)
! Macross Plus
** Giant Robo (Superhero team with a giant robot)
* Wings of Honneamise
* Anything by Studio Ghibli
http://en.wikipedia.org/wiki/Studio_Ghib…
* From what little I've seen: Planetes
** Big O (Batman with giant robots)
** Fist of the North Star
!!!! Dragon Half
* Memories
! Riding Bean
! Gunsmith Cats
** Ninja Scroll
** Roujin Z
** Patlabor movies...I haven't seen the TV or OAV, but if it's like the manga it should be good.
* Millennium Actress
! 3x3 Eyes
** Death Note
** Akira
*would recommend to someone who doesn't generally like anime
**might tentatively recommend to someone who doesn't generally like anime
! would not recommend to someone who doesn't generally like anime
Bleach is such a generic throw-away show it isn't even funny, and Code Geass is the worst anime I have seen since about 1993