Name a single movie scene that justifies an actor's entire career

[pitohui]

73. timothy treadwell in grizzly man (rant scene)

oddly enough, since you mention rutger hauer's best scene as one where he writes it himself, timothy treadwell filmed this scene himself...but i strongly strongly suspect that the wernor hertzog edit made it perfect

one of the most horrifying scenes on film of a man who is without self consciousness and cannot see himself as others see him throughout the course of the rant

a fine film which i think of often (and yes i realize it's a documentary but i think we're all adults here and we know that people "starring" in their own films/documentaries indulge in a certain amount of ACTING and treadwell does so here)

(and i agree that rutger hauer/blade runner is another of the films in that category)

the person who mentioned nicolas cage/adaptation...that is another excellent choice, hey, that banana muffin that's a good muffin