I remember my first reaction to the Hulk cartoon: "What's this?" The first thing I noticed is that the animation was unlike the other cartoons on TV. Basically you had a reprint of the original comic book drawings with moving mouths. Sometimes the whole drawing would move to indicate "action." While this may sound bad, it actually added to its appeal. I found myself glued to the TV while this show was on. I loved the fact that the stories came directly from the comic books. No "made up" stories by some writer who hadn't read the original comics.
Each episode ended like the real comics; the viewer was left with a cliff-hanger until the next episode. Wow! If you're looking for a classic superhero cartoon, here it is.