Walken made an impression playing Diane Keaton's brother Duane in Woody Allen's "Annie Hall" (1977).
DUANE: I tell you this because, as an artist, I think you'll understand. Sometimes when I'm driving, on the road at night, I see two headlights coming toward me. Fast. I have this sudden impulse to turn the wheel quickly, head-on into the oncoming car. I can anticipate the explosion. The sound of shattering glass. The flames rising out of the flowing gasoline.
ALVY: Right. Well, I have to, I have to go now, Duane, because I'm due back on the planet Earth."
Credit: United Artists