I see that John Barrowman clip has already circulated through half the interwebz. I saw it yesterday, and I still think it's absolutely horrifying hilarious.

The sad thing is I can actually see Barrowman agreeing to make something like that (because I'm pretty sure it's an edit). Ffff. What a dork. I can't quite decide if my favorite part is the river-dancing or the jazz hands at the end. Or wait - maybe it's his cracktastic grin throughout the entire thing.