Edit: Night #2 for swimming with the devil
This video is from Victoria Falls, Zimbabwe. Not only are Victoria Falls one of the largest waterfalls in the world, but they have an amazing little feature known as the Devil's Pool. The falls are extremely powerful but by an accident of nature, there's a very calm pool that sits right on the edge of the falls. You can jump in and swim, even lean over the edge of the 100-foot precipice if you've got Delaney-sized balls. Supposedly guides will sometimes pretend to fall in if their group appears unaware of this spot, which seems like a fantastically fun joke to me.
Zimbabwe Devil's Pool at Victoria Waterfall (via ascensions)