Alpha particle detector, made from a webcamera.

[ilkhd2]

http://www.youtube.com/watch?v=Lvm9gL4KVQg

[jacquesm]

That's a very neat hack.

Someone once wrote they were trying to turn a bunch of cheap webcams with some nifty cooling into a large baseline telescope, I always wondered what became of that project.

[icefox]

This could really use a webpage detailing what they are doing and why.