Space Sentinels (a classic)
Pink Panther (Those Inspector Closeau/Anteater cartoons were mad funny, guys)
Godzilla (Godzooky rulez

.)
Hong Kong Fooey (Scatmanis the MAN, yo.)
Tarzan of the Apes (suprizingly close to the books, IRRC)
Spider-Man and his Amazing Friends (Still the best cartoon that ever featured Web-head)
BlackStar (Filmation's take on Tolkien, kind of).
Flash Gordon (I didn't realize how big a Filmation geek I actually was until I did this list)
Mighty Orbots (I remember this being ...pretty)
I left out the stuff I didnt actually see on Saturday's like Transformers 'cause I'm anal.