As you've probably heard, we got some awesome celebrity knock knock jokes published on Modern Humorist - not once but twice! We went through several drafts, and several rejections. Here's the ones you didn't see.

Knock Knock.
Who's there?
William Shatner
William Shatner who?
William Shatner mouth.

Knock Knock.
Who's there?
Willem Dafoe
Willem Dafoe who?
Willem Dafoen's ringing. Answer it!

Knock Knock.
Who's there?
Howie Long
Howie Long who?
Howie Long to see the end of those Radio Shack Commercials

Knock Knock.
Who's there?
Ted Koppel
Ted Koppel who?
Ted Koppel-lot of attitude about David Letterman

Knock Knock.
Who's there?
Dan Rather
Dan Rather who?
Dan Rather be fishing

Knock Knock.
Who's there?
Darryl Hannah
Darryl Hannah who?
Darryl Hannah abortion

Knock Knock.
Who's there?
Ted Danson
Ted Danson who?
Ted Danson on the Ceiling is the worst Lionel Richie song.

Knock Knock.
Who's there?
Keanu Reeves
Keanu Reeves who?
Keanu Reeves me wondering how he got that part in the first place.

Knock Knock.
Who's there?
Rodney Dangerfield
Rodney Dangerfield who?
Rodney Dangerfield up my little sister.

Knock Knock.
Who's there?
Danny DeVito
Danny DeVito who?
Danny DeVito is only for de President