Las Vegas (21 of 21)

The X-Scream is a sled on a rail that is tipped down over the edge of the tower. To the great disappointment of all Muslim extremists out there, the screaming Americans do not plunge to their death - the sled stops with the first pair of riders sitting just in front of the outermost end of the rail.

I think that someone should do a BASE-jump from the front seat, pretending to be thrown off just to freak everyone out.