Maybe my favorite of the series
I still haven't watched the 5th one, but out of the first four, this one is probably my favorite. 1 is too dull, 2 is probably my second favorite, 3 has a lot of unintentional comedy, but as a serious movie, it's tedious and inane. 4 has a decent script for the genre, and a couple of neat twists, but fizzles out at the end, with the final showdown.
Rocky VI must happen! Sean Penn said so!