I just wanted to point out something that I love. Did anyone else notice, during Bad Romance, that while most of the guys looked super bored, Artie was totally into it? He was dancing and everything. The shots of the boys are quick, blink-and-you'll-miss them, but Artie is undeniably really, really enthusiastic about the fact that his girlfriend is wearing little more than see-through plastic bubbles.
Artie mirrors the girls' lineup
Artie Daddy Sharks Mr. Schue's head:
Mike likes it, too, but not as much as Artie:
It's like the opposite of the "Express Yourself" reaction shots, wherein Artie looked like he'd rather shoot himself in the face than keep listening to Tina rant about him via Madonna.