Seriously though, I've gotta agree with Mark Hamill, he wasn't very good in the first film
I disagree. Hamill was the reason anyone cared and bought into the fantasy situation. It was his journey, and people wanted to see where he was going in that first film based on how the role was played.
Contrast that with Hayden Christensen--who had two films as the character making the pivotal journey, but he was awful in every frame, without any sort of growth in either movie.