Today is the international Go Skateboarding Day holiday, and while you might not be able to join the largest gathering in New York, you can still celebrate the strong skate culture here in Portland, helped along by a super-sweet system of indoor and outdoor skateparks. Word is that everyone is heading down to that old classic, the Burnside Skatepark for all-day "epic fun." Bring your board or just your lunch, or at the very least, revisit this trailer for Dogtown and Z-Boys, if not the documentary itself.