As you know I'm a huge extreme sports enthusiast. I luv riding anything with a board or wheels. My current addiction is snowboarding but in the summer its a little difficult to ride, unless you go to indoor slopes. That's where the Dirt Surfer comes in. Its a cross between a mountain bike and a skateboard...and its awesome! It can be ridden on all down hill terrain, is equipped with disk brakes and easy excess foot bindings just in case u need to bail quickly. Check out the clip.
Another innovative summer toy I found is the OrbitWheel. Its rides like a wave board without the board and you wear it like roller skates. I like the idea but this is not my type of ride because it limits my forward motion...but different strokes for different folks, so I posted it anyway. The clip is below.