Heeeeres Twilight!

(Homer chops a hole through a door and sticks his head through the hole.)

HOMER: Heeere's Johnny!

(He realizes that he's in the wrong room.)

HOMER: D'oh!

(He chops a hole through another door and sticks his head through it.)

HOMER: David Letterman!

GRANDPA: Hi, David. I'm Grandpa.

(He realizes again that he's still in the wrong room.)

HOMER: D'oh!

(He chops a hole through a third door and sticks both his head and his arm. He's holding a stopwatch.)

HOMER: I'm Mike Wallace, I'm Morely Safer, and I'm Ed Bradley. All this and Andy Rooney tonight on "60 Minutes"!

MARGE/BART/LISA: AAAAAAH!!!