This is a short video of a carbon nanotube muscle, it is very cool. This sort of technology can be used for all sorts of interesting micro motors, engine parts and other machinery such as very manipulatable arms for robots (search and rescue anyone with a cam mounted on one of those to look inside the rubble).
Next is this interesting article on grown organs, so far a bladder, bone marrow and a rat's heart have been made with the bladder having been successfully transplanted into a patient. This is the future of medicine: constant refreshment of organs as and when they are needed. Neat huh?