In no specific order...
Giant Robo
Space Battleship Yamato (original or 2199)
Lupin III
Cowboy Bebop
Mononoke Hime

Honorable Mentions (10):
Irresponsible Captain Tylor, El-Hazard, Excel Saga, Ah! My Goddess!, Dirty Pair, Metropolis, Arcadia of My Youth, Gatchaman/Battle of the Planets, Ghost in the Shell, Speed Racer