Whos your favourite ever actor/actress?

By favourite actor I mean actors you see films for, actors you feel improve even the worst of films, actors who make wise or brave choices, actors who really make characters come to life etc. My prefernces would be Ed Norton (on Fight Club alone, but also AHX and others), Kevin Spacey (one of the best actors of the last few decades), Jim Carey (contentious, but Truman earns him the place), Naomi Watts ( Twenty One Grams, Mullhoolland Drive), Bob DeNiro (need I explain) and Jake Gyllenhaul (for his great performance in DD and Brokeback).