If you're in the market for a new web cam, check out the Logitech Orbit Cam. The software that comes with it allows you to do some really amazing and fun affects. You can view a demo on YouTube at
http://www.youtube.com/watch?v=r7Gn2TyEyHw&feature=related. The camera retails for about $129. For more info, check out
http://www.logitech.com/index.cfm/webcam_communications/webcams/devices/3480&cl=us,en