South Parks advantge is ofcourse how quickly its animated meaning it can really make use of current events. All the best episodes are based on this but as a result it means its going to be dated fairly quickly. Simpsons and Family Guy however will have a timeless quality because issues have to be more generalised when discussed, Simpsons will always be better than Family Guy to me, I even consider American Dad to be a superior show (more cohesion even if its more a cliched sitcom). And in my opinion the Worst Episode of The Simpsons was the one where the simspons visit Africa which was years and years ago. Still better than most over television that episode though. Recently we have actual seen a return to form especially early the season just been with prehaps a slight but noticable drop in quality in epsiodes that were perhaps produced at the same time as the movie.