Great America here in the Silicon Valley is pretty good. I actually went there this past Sunday. They've got this thing called the skyflyer. They'll put you in this harness/suit thing, attach a cable to your back, they lift you up about 200' off the ground, then they drop you. Since the cable is attached to a point that's out in front of you it's basically a giant swing. You come swooping down face first(like you're flying) to a point about 6" from the ground, then back again. Totally crazy.