I was at the taping of the first Weird Al episode. The audio guy played "Eat It" during the break and Al started dancing and singing. It pretty much made my week.

I've been to about a dozen tapings and it generally shoots between 45 minutes to an hour. They actually cut out TONS of funny stuff because Chris and the comedians all go off on tangents. I have discovered so many new hilarious comedians because of this show.