FMX Extreme Bike Beach Show is an annual event that occurs on the Orange Countyy's Huntington Beach. The riders generally come from California.

They ride up a huge rubber ramp on their specialized, motorized bikes and perform all sorts of stunt tricks. Some even turn completely upside down while flying through the air, then releasing their hands and feet from the bike as seen in the picture above.  It's an extremely exciting show to watch. This event usually occurs in conjunction with the US Open of Surfing.

BMX Trick: No-hander ...more tricks
Pull your front end up hard as you leave the lip of the jump. Get your bike in a near-vertical position. Your bars should be in your lap before you take your hands off. This will keep you from losing control; your legs will actually be holding the bike up while your hands are off. Little by little, take your hands off more each jump. Start to level your bike out as you put your hands back on the bars. Make sure the bars are straight and your hands are securely back on the handlebars before landing.