This over-50 extreme sports athlete makes peoples' jaws drop with only one wheel. Terry Peterson, best known as the UniGeezer, has become a worldwide sensation on a unicycle.

Well, at least he's entertaining! And he actually is hoping to make a point. He's hoping we'll consider alternative medicine along with more conventional means for some of our health woes. So, what do you think? Should he stick to directing?

It's the ultimate motorized highwire act, requiring lightning-fast reflexes, incredible strength and stamina, and nerves of steel. For decades, motocross has been a young man's extreme sport. It's still extreme, but suddenly there's gray hair everywhere.