http://cgi.ebay.com/InFraRed-Laser-T...QQcmdZViewItem

That looks like a very good price. Anyone knows a better one for less?
I was looking for such a nice thingy a long time.
Common Applications

Electrical troubleshooting
Automotive repair and maintenance
Air conditioner
Science experiment
Manufacturing processes of semiconductor technology
Test terminals on circuits
Perform HVAC energy audits