what about sean penn? he has done some phenomanel acting over the years. i love bill murray, i do, but i dont believe his performance in Lost was better than sean penns in Mystic River. as the vote should go to the best performance of the year, sean penn has deserved it for a long time. it shouldnt be this way, but actors and actresses win all the time based on their career. come on, denzel washington for Training Day? although i am making this case i still think sean penn gave the best performance of the year and hope he takes the oscar home. when you think of great actors does bill murray come to mind over sean penn? i may be way off base, but i dont think so.