For the geeks: Clockless chips. I find this interesting because the Stellar 3D cores used a handshaking protocol which is much like what would be needed on a clockless chip.
A Lego robot which solves a Rubik's cube! There are also pictures of the device in action.
[I]nstead of snapping from one position to another like a karate expert the movement is more like t'ai ch'i master -- full of controlled energy.