Things are about to get extreme in Aspen. Spot legends like Shaun White, Gretchen Bleiler, and Lindsey Jacobellis on the slopes as they compete for one of the most coveted titles in action sports. Events include slopestyle, big air, superpipe, and snowmobile speed and tricks. On Saturday night, stick around for the Bud Light Hi-Fi Concert at the base of Aspen Mountain. Thu-Sun, times vary.