I couldn't find anything on this when searching originally, so I thought I would post something here incase others are interested in doing it.
We successfully installed Zoneminder on an OLPC XO-1 and got it to read the built in webcam. Zoneminder (for those who do not know) is a simple tool that turns the webcam into a basic security system. It will record movement when detected, and even send your an alert. You can go back in history and re-play any recorded movement.
Now we have a low powered portable security monitoring system!
http://gctechspace.org/2012/01/zonemind ... olpc-xo-1/