I gave my mom a Logitech Quickcam Pro 9000 that I was barely using, and she uses it with Skype. She seems fairly happy with it.

In the past I've used the Xbox 360 with its webcam to share Christmas with my sister and her family, as they also had the 360 w/ webcam. It's kind of cool for that, since then you're sharing living rooms and not computer rooms.

That's the whole of my experience.