Actors that play themselves playing their character

Re Ahnold, can I count T101 and T800 as separate characters? :wink:

And I’ll disagree on both Robin Williams and Keanu Reeves being on this list. Robin Williams has not one, but two characters: Comic Robin Williams (Mork, Good Morning Vietnam, etc.) and Serious Robin Williams (Dead Poets Society, Good Will Hunting, etc.).

And Keanu Reeves isn’t a one-character actor, either: He’s a zero-character actor.

Someone in another thread said that Russell Crowe “stared” in Gladiator. But Keanu has done more staring than Crowe ever will. All of it blank.

John Cusack was the first person I thought of when I saw this thread.