I can see this working for a lot of 'spy' applications... for instance, snaking into duct work w/ a camera attached to check out a scene before sending in people (I guess it would depend on the noise factor though.)

The one in the water...now THAT would be an expensive lure for crocs & gators.

Can you imagine Samuel L. Jackson doing "Robotic Snakes on A Plane"?! hehehe!!