"Plot Synopsis: Having defeated boxer Apollo Creed twice, Rocky now finds himself . . ."
Rocky didn't beat Creed twice. He only beat him once.
Nitpicking aside, Rocky III is a very good movie, as long as you know what to expect. This is when the Rocky franchise went from well-acted drama to vapid action movie. As long as you knew the difference before you see the movies, you won't be disappointed.
Rocky III is FULL of quotables, most of them from the perfectly casted Mr. T as Clubber Lang. As far as movies in the franchise go, this is the second in the list of must ownership, right after the original Rocky.