Skateboard pioneers TONY ALVA, left, and STACY PERALTA, stand on the roof of a San Francisco Hotel during a press juncket for their award winning documentary film DOGTOWN AND Z-BOYS that opens May 3. The Movie Spiderman also opens May 3. Alva and Peralta were instrumental in bringing skateboarding to the mainstream in the 1970's in Southern California. (Photo by Alan Greth)