All excellent choices. I'll add a few to the list: Superfriends, Spider-Man and his Amazing Friends, Spider-Man (1981), Filmation Batman, Batman Brave & the Bold (love this show), Incredible Hulk (80s), Mighty Mouse, Mighty Heroes. I really like all of the direct to DVD movies that Marvel and DC have released: Dr. Strange, Hulk VS Wolverine/Thor, Ultimate Avengers 1 & 2, Iron Man, Next Avengers, Wonder Woman, Superman Doomsday, Batman Gotham Night, Batman Subzero, Batman Mystery of Batwoman, and Batman Mask of the Phantasm (Phantasm was released theatrically).
Well my picks are that aren't listed above:
The Batman
X-men:Evolution
Teen Titans
all the good show were ending & these were the one I really enjoyed!