I am a big fan of Orlando Bloom from his time in LOTR.. I also like Chris Pike in Star Trek. I remember the original rumours that he would be cast for the role of Hal Jordan in the up coming Green Lantern movie. I was initially upset until I saw Star Trek, now I am upset that it is NOT him. Heath Ledger was also up there for me, besides Brokeback Mountain, I own every single one of his movies.. then the icing on the cake was when he entered the DCU and did an absolutely brilliant job with The Joker.
But overall I would have to go with the legendary: