My brother, decided that he should be getting a camera a while ago, and by chance my father stumbled upon a rather awesome one. About 2"x1.5" this Gemini keychain camera, can take qualtiy pictures and Mpegs. At high res it can take 20 uncompressed and 60 compressed at low res 80 uncompressed and 240 compressed. It also has the ability to take video. This thing is really cool, and good for catching people in the act, especially if say you need to get a picture of a licensce plate or something just pop out your camera on your key chain and take picture or video. Or on the spot videos (say a school yard fight) I give this product a:
4.5 out of 5

EDIT:
Also as an added benifit it was only $20-$30