The 18th installment of the Summer X Games kicks off tonight in Los Angeles. The holy grail of action sports, the X Games has been largely responsible for the fame of now-household names such as Tony Hawk, Shaun White, and Travis Pastrana. 

As we prepare for what is sure to be another great X Games weekend, let's take a look back at some of the event's defining moments. The inspiring video shown above, put together by YouTube user "XGamesGirl," is capped by Pastrana's legendary double-backflip. Amazingly, this awesome compilation has only 30 views.