A few websites that list webcams:

General Webcams
EarthCam  http://www.earthcam.com/
LiveViews  http://www.liveviews.org/
The Webcam Resource  http://www.camcity.com/webcamresource/
Peeping Tom  http://www.coolbase.com/peepingtom/

Adult Webcams
Peeping Moe  http://www.peepingmoe.com/
akagecko.com  (male webcams only) http://www.akagecko.com/
JASBITS  http://www.jas.com/jasbits/netcams.html
Real CamGirls  http://www.realcamgirls.com/
TopCams  http://www.topcams.com/
Cam Depot  http://www.camdepot.com/