I saw this in this month's PC Magazine. It was under secrets in Google. Basically, webcams use some url's, and if you put these into Google, you can virtually watch any webcam online!
So far, the best code I found to use was this one (click the link and you have a google search of webcams you can watch)
If the webcams arent locked, you can even pan and play around with them and crap Really cool.
This site also has codes for other kinds of webcams.
Post back here with the most interesting webcam you find. Points if someone finds a "dirty" webcam, lol.