Ever on the lookout for nifty projects, I stumbled across this stereo video display. It works by synchronizing cheap board level video cameras with a rather simple circuit, and then using lcd shutter glasses on the display.
I’ve seen broad descriptions of similar systems, but this one is very detailed and includes complete descriptions of all the necessary hardware and modifications.

Some similar gadgets are on the Digital Stereo Photography page, along with nifty gallery images taken with his hardware.