His performance at the 2012 Grammys. After a performance from David Guetta, Chris Brown and Lil Wayne, he does an awesome remix of "Rope" with Foo Fighters before wrapping it up with "Raise Your Weapon" (which was nominated for Best Dance Recording). The crowd was great, and he debuted an amazing new LCD mau5head.
A minor at the Grammy´s that doubles as a Crowning Moment of Funny: He wore a T-shirt with Skrillex´s actual number on it followed by "u mad?".