You kids and miscellaneous hipsters probably love this one: The Flowlab Skateboard. They were invented in the 90s, and it surprises me that they haven't completely replaced regular ones. It looks a lot more fun.
Unlike most conventional skateboards—which can lean up to 25 degrees—the Flowlab allows you to carve at 45 degrees. That gives them a handling similar to a snowboard, without requiring any snow. [Mike and Mike and wikipedia]