In 1985, at the tender age of 13, Mat Hoffman entered into the BMX circuit as an amateur, and by 16 he had risen to the professional level. Throughout his storied career, Hoffman has ignored conventional limitations, instead, focusing his efforts on the purity of the sport and the pursuit of “what’s next.” His motivations stem purely from his own ambitions, and even without endorsements, cameras, fame and fans, Hoffman would still be working to push the boundaries of gravity. Academy Award nominee Spike Jonze and extreme sport fanatic Johnny Knoxville, along with director Jeff Tremaine, will showcase the inner workings and exploits of the man who gave birth to “Big Air.”

The craziest thrill-seekers and adrenaline junkies demonstrate their repertoire of mind-blowing stunts in the fields of skateboarding, snowboarding, skiing, surfing, BMX and motocross.

In the history of sports, few names are more recognizable than that of Evel Knievel. Long after the man hung up his famous white leather jumpsuit and rode his Harley into the sunset, his name is still synonymous with the death-defying lifestyle he led. Notoriously brash, bold, and daring, Knievel stared death in the face from the seat of his motorcycle, but few know the larger-than-life story of the boy from Butte, Montana.

Made-for-IMAX documentary about the athletes of ESPN's Summer X games, including skateboarders, BMX riders, motocrossers, and street lugers.