Happy birthday, Mr. Hamill, who has brought us so many compelling characters over the years: Luke Skywalker, The Joker, Himself playing Cock-Knocker. Just kidding about the last bit, but seriously, Mr. Hamill, Happy Birthday.
I concur. To me, Luke's story arc from whiny farmboy to uncertain apprentice to Jedi Master throughout the OT is truly interesting, and Hamill's performance really sells it. Happy Birthday Mr. Hamill!