Block 2-1: And I feel fine

[Wowbagger]

Having watched PHJ's link, I now strongly approve of this joke.

Here's a shot at doing all three. Absolutely no new material ahoy:

Mothership: *LOOMS*

SETI Computer: You've got mail!
Supervisor: Oh, great. More prawns?
SETI Guy: No. The signal is coming from inside the house!
Everyone: GASP!
SETI Guy: Just kidding. Actually, the signal is coming from the Moon!

SecDef: A signal? From the moon? Is it the whalers? The whalers on the moon? I hate those guys.
Military Guy:: Uh, no. There ain't no whales on the moon.
SecDef: Are you sure? They carry harpoons you know. I'm not tellin' tall tales. The whalers on the moon.
Military Guy:: Will you stop saying that!

Alternate Ending:

Military Guy: Stop singing! Christ, and I thought this ended after "Let The Eagle Soar."

...which, of course, refers to the most comedic moment of the Bush Administration.