Yet another awesome use of PS3 cells. Terra Soft has built a stereo vision system based on the PS3.
Slashdot is reporting it was used in Axion Racing's entry to the DARPA Urban Challenge.
Terr Soft: http://www.terrasoftsolutions.com/showcase/cellebration/axion/tss.shtml
Slashdot Discussion: http://linux.slashdot.org/article.pl?sid=07/10/30/161252
DARPA urban challenge: http://www.darpa.mil/grandchallenge/