Someone at work sent around some photos of people swimming near the edge... yes, the TOP, of Victoria Falls at Zimbabwe.
My first instinct was to visit Snopes.com to find out if this was real. Snopes had nothing on it.
A little Googling later, and I came across this web site -- a blog -- with the same pictures, AND a video.
I don't care how safe it is... I think you'd have to have bowling balls to do that.
Check out the video...
There's another one on their web site as well that's worth watching.