Brad Pitt
What are you a gayer? For me it has to be DeNiro, a mile ahead of Pacino imo, I'm not dissing Pacino as he is a fine actor but he relies on shouting too much and isn't as versitle as DeNiro.
One thing that annoys me when it comes to acting is that everyone seems to think it takes great skill to play a homosexual on screen, e.g. Hanks and Ledger got hailed for their performances in Phila and Brokeback Mountain, the truth is most actors are probably a bit gay anyways so it does really require much effort.