Yesterday, weezer attended the mighty premiere of "Jackass 3-D" at Grauman's Chinese Theater in Hollywood. followed by a raucous afterparty across the street at the poolside lounge of the Roosevelt Hotel. Mucho mas fun was had by all. In attendance were all the Jackass regulars and pretty much anyone who had anything to do with them, a menagerie of famous and infamous types including Spike Jonze…