The greatest Rocky movie? I think it could be. It's hard to pick a favorite Rocky movie, but Rocky IV definitely makes its case for first place. The epic showdown with Ivan Drago drips with emotion, heart, and motivation in ways the other movies can't match. Add the restless conflict between USA and Russia at the time, and it just doesn't get better. Getting the final fight perfect was so crucial that Sylvester Stallone recommended actually boxing and ended up in the hospital after getting knocked out by Dolph Lundgren. Ivan Drago is, without a doubt, the franchise's best villain. The development of Rocky and Apollo's relationship in Rocky IV is a beautiful credit to excellent writing and four movies worth of growth. The added Christmas spirit gives the film more character. If you had to watch only one Rocky, I would say pick this one, but it's only as great as it is because it stands on the shoulders of the movies that came before.