We did one for the 80s, and even though the 90s were when creator-driven shows were big (ie, ren and stimpy), there were still plenty of cartoons based off of movies and tv shows (ie, men in black), so which ones could you see being made? Im thinking the X-Files. You'd have to tone it WAY down and just make it mulder and scully investigating aliens and such, but it could still work. Waynes World would be a good choice too, just get rid of the sexual humor and it could be a huge hit (and if you keep in some of the fourth-wall breaking humor and satire it would fit in well with some of the other no-fourth wall cartoons).