Bar stool racing, the latest weird racing-fad ever to hit, well ... somewhere in the heartland of America, I guess. http://www.barstoolracing.net/index.html
Ze Frank's running a "make your own clothes out of toilet paper" contest. These people have too much time (and now, less toilet paper) on their hands. Link
Japanese illusion artist Shigeo Fukuda created impossible objects with neat optical twists.
In one of his famous works, he showed a jumble of junk whose reflection on the mirror shows a perfectly fine piano. http://neuro.caltech.edu/%7Eseckel/mod/fukuda.htm
