What's black and sits at the top of the stairs?
Christopher Reeves in a house fire.

Why didn't Superman save Princess Diana?
He was in a wheelchair!

Who does Christopher Reeves wish he was?
Christopher Walken

What's Superman's greatest weakness?
Stairs

What's the difference between O.J. Simpson and Christopher Reeves?
Christopher Reeves got the chair.

What does Christopher Reeves want to be for Halloween?
Alive