My first digital camera had that as a feature that it could be used as a Webcam(never tried that out). It was a 3 Megapixel Polaroid. I didn't like it, it was like $70-$100 like three or four years ago. No macro mode, so it wasn't very good for taking pics of Transformers, and I couldn't see the screen outside with bright sun. Yeah, not the greatest, but it did it's job. I got a better one last year that came with a Printer that works better. This was the camera:
I'll take a pic of it tomorrow(or scan it) with the sticker showing that it would work as a Webcam as well, if you want.