Carbon Nanotubes are one of the most talked about inventions in nanotechnology…but, what are they good for?  There are pie in the sky dreams of using carbon nanotube fiber to create the space elevator ribbon, there are attempts to line it up as a near superconductor.  But creating multi-mile long cohesive strips of the stuff is going to be hard.

On a smaller scale it appears have some applications that might actually be achievable in the short term such as a synthetic muscle.

Artificial muscles made from carbon nanotubes are 100 times stronger than human muscles. [link]

Trippy.