Bam Margera, legendary pro skater and star of Jackass, struggles to overcome substance abuse and the loss of his best friend as he works to make a return to skateboarding.

Legend Heath Kirchart, walked away from skating at the height of his career. He's gone from pushing his physical limits on a board to a new life of death-defying travel missions.

Influential filmmaker Spike Jonze looks back on his career and discusses how skateboarding influenced his work from groundbreaking music videos to Jackass to an Academy Award.