Hawaii Parkour has a mascot, someone who comes out to train at almost every jam and is as dedicated as anyone else in the state. This is a video Ozzi cut together of their mascot, Roxy.
Over a 150 traceurs showed up from across the world to Rendezvous 3 in London for a two day event of teaching from Parkour Generations and several members of the original Yamakasi. The event was a cold, wet, and rainy success with the first day's training space supplied graciously from the South Bank Center and the second from the Westminster Sports Academy. There were four American's who went and you can read from both Nick Maurer and Tyson Cecka on their blogs.
This independent film was inspired by parkour movements - including several parkour scenes! The local crew in St. Louis, notably a local tracuse Elly, gave ToastedRavsome good insight into parkour (http://toastedrav.com/post/4660/story) and helped with the independent film!
Parkour's spread is GLOBAL! Take a look at this article describing a group of traceurs in Beijing, China. They emphasize the importance of a solid foundation and the challenge of outdoing yourself :)