Nitro Circus live features 40 of the world's greatest action sports athletes, pushing each other every single night to innovate in their respective sports. In an environment like this, world firsts and never before seen stunts become the norm, rather than a rarity. Here is a countdown of the top 10 craziest tricks currently being thrown down at a Nitro Circus Live event! Watch, and make room for your jaw to hit the floor. Nitro Circus Live is returning to Europe in 2013, and coming with the first ever North American Tour in January 2014. Head to nitrocircuslive.com for tickets!