I just found this site and I love it. My daughter is a power tumbler and competes USTA & AAU. You can look at videos of her on youtube if you want to see more of what power tumbling/trampoline is about. Search videos under sethandjadensmom. This is the closest thing I could find, and I am a former gymnast. I am from Iowa, home to soon-to-be Olympian Shawn Johnson! We just love watching her. My daughter met her last October when Governor Culver proclaimed Shawn Johnson Day here in Des Moines.