Awesome style, minor production faults, nice flash
This is pretty nice. It not only captures the beauty of old school television cartoons, it emulates the style. The characters are somewhat stiff, though, not well animated. It IS part of the joke but so isn't how the superheroes resolve their struggles.
The main thing that struck me was the coloring style of the backgrounds. They sharply contrast with the styles of the characters themselves. This I've picked up from cartoons over the years until recent times. It instantly draws you into a very different world than what you're used to.
If I had a complaint, it is the sound quality. Lots of things sound muffled. You probably used a basic sound recorder, though I'd recommend Audacity if you don't have it.
I look forward to part II and maybe someone will put this on the Front Page since the unique execution already embodies enough nostalgia to warrant a look from everyone.