Bored with traditional skateboarding or just looking for something new? The FreeRider SkateCycle ($150) should fit the bill. This unique machines feature front and rear wheels with openings and platforms in the center onto which your feet go. The wheels are joined together by a cross bar that lets riders move their feet from in to out and back again for propulsion. There aren't a ton of tricks developed for them yet, but there's no reason you can't try.