They say its able to hold 3kg, wrap around poles, bend in just about any direction and pretty much allows to mount a camera almost anywhere.
So of course I had to put it to the test with my sub camera the Canon 30D with vertical grip, 2 batts, 70-200mm f2.8L IS, 430ex II flash and a Kenko ball head. This total weight combined would have to be over 3kg for sure but the Gorillapod still managed to hold it up. Of course you would want to use the remote cable for shooting like this but still that pretty damn coool!
They come in 3 sizes and this one sells for 5000yen or about $50 bucks US. Im sure its way cheaper in the states but for some reason a lot of camera gear is more expensive here in Japan. But still well worth it for sure. Im looking forward to trying it out in some more unusual places when I get time.
So far I highly recommend them! Come check them out at http://www.joby.com/products/gorillapod/