I got one of these from my daughter for Father's Day as an electronic toy she thought was cool. I was going to exchange it since I couldn't think of a need for it. I charged it and played with it. It's pretty cool. I can think of a few times in my career where I wished that I'd had one of these. Not the kind of thing you want to spring on someone more than once, but it would have saved my butt once or twice in my 30 year career. You know, the situation where someone totally hung you out to dry by saying "I didn't say that", and left you twisting in the wind. The audio and video quality is pretty good, and it will record for 1:40 hours. Its an AVI extension and loads right up on Windows. Check out the demo video on the link.
Video Camera Spy Pen at Brookstone