IRSeeker is available now...

HiTechnic will begin shipping the IRSeeker sensor on Friday, June 22nd. More information on the sensor can be found here.
The sensor will be very useful for teams wanting to develop robots to participate in Robocup tournaments.

Comments
IR flux, and the magnitude of that flux, I could get a sinmple robot to home in on the fireplace, and stop at a certain distance. A lot of fun. I've not yet tested it on much weaker IR sources (candles), but it could be interesting.
--
Brian Davis