Think of a Hula-Hoop times 50 and you got a whole lotta shakin' going on. Every spring, the world-class Heard Museum hosts the world championships for Native American hoop dancing. It's like a slam-dunk contest for dancers, except that these folks must don traditional dress before they shimmy, contort, and gyrate for cash prizes and the glory of being the best at what they do. Alongside the adults, teenagers and little ones also vie for the big prizes. The event is held on the Heard grounds in downtown Phoenix, and the $10 fee for adults also covers admission to the museum. Children under the age of 4 get in free.