Is this possible

I just got an insane idea for a game. What I was wondering is,

I want a webcam stream to be the characters head.

Is this possible? Does it make sense?

EDIT*

Check this out. This is what I want. How is it done?

http://www.jon-martin.com/test/flashcam.html

I don’t see why you couldn’t with some good programming knowledge and Unity pro (you need plugins).

Check this link out.
http://forum.unity3d.com/viewtopic.php?t=17868&highlight=webcam