If you happen to stumble on over to Japan you may want to meander to the Fuji-Q Highland Amusement Park so you can ride the world's steepest roller coaster. It's called Takabisha and it is one beast of a coaster that includes a 121-degree freefall!

Personally, I don't think I could make it through the ride without some adult diapers. Here's a shaky video of some dude taking the ride.