I picked up a couple of point and shoot cameras as well as a Hi 8 video camera from Goodwill Friday. The Hi 8 had a tape in it, looked at it and it was someone's vacation to Italy, I believe. They had some fun too, fast forwarded around and they went to a couple of magic acts, rode on a boat or two, and saw many vendors at a street market (and I am sure other things, the tape was over an hour of video).
No idea how to get the video back to the owners but it was still cool.
I buy these things to resell myself. Watching bits of the tape reminded me of your photography archiving so I wanted to share that with you.
I picked up a couple of old video cameras in the past. One was a hard drive based camera and someone's wedding video was on it. I assume that they copied it over to PC or something at some point and just never deleted it from the camera. Or maybe it was just a real short marriage...