PSY's "Gangnam Style" sensation reaches a new height with his special performance at the 2012 American Music Awards featuring MC Hammer, who makes a surprise appearance starting at 2:45.

This is not your average Gangnam Style dance video. Taken during a rooftop party at an Arizona State University parking garage, this clip demonstrates what a dance floor full of Gangnam Style revelers can do to the ceiling below.

These teens weren't about to let Shirtless Guy In A Horse Mask get all the glory.

Excuse me, did your "Gangnam Style" video have an MIT professor dancing in a lecture hall? Or Noam Chomsky in it? Didn't think so.

Party on, Nerds!

Furries and a windmill, really?! So bad it's good.

[thanks, heidi!]

You have to admit this is amazing.

Bonus light shows: Runner-up #1 (thanks, cliff!) and Runner-up #2 (thanks, moffit!).

PSY is playing Sydney today, so he prepped for his performance with a "Gangnam Style" visit with Hugh Jackman on The Wolverine set.

[thanks, john!]