When it comes to the six Rocky movies that have been made, different people have different opinions about which movie in the series was the best one. While some consider Rocky II and Rocky III the best ones, from my experiences discussing these films, most people claim the first or fourth efforts as their favorites. Personally, I like Rocky IV because not only does he avenge Apollo Creed, but he also crushes Communism in the process. Still, what generally everybody agrees on is that Rocky V was the worst one.
Of course, the fact that Rocky V sucked did absolutely nothing to keep new Philadelphia 76er Elton Brand from buying the house used in the movie.