I adored both of these games... some favorites on the Genesis as a kid. They were both brimming with such unique gameplay concepts for the time, and even impressive technical feats, such as getting the split screen, multi-level co-op to function. The first game is also one of very few that I was able to get my mom to play with me.
It makes the failure of the third game in the series that much more heart-breaking. I bought it even after the terrible reviews and tried hard to convince myself that I liked it (I really don't), even writing personal letters of support to the original creators and thanking them for at least trying. Visual Concepts was not a good developer choice and the game was full of terrible stereotypes... the funk was not strong with it.
I also think the series still has so much potential for proper revival, especially on devices like 3DS or Wii U. Too bad the creators' studio shut down and they split up. We'll never see it back as a full retail game, but perhaps a smaller developer can acquire the rights to a smaller, digital product someday?