I’ve released a new version of RearViewMirror, an application that turns an ordinary web camera into a fancy mirror. The application also has a motion detector that will keep the camera window hidden until somebody is actually sneaking up on you (or walking behind you).
The biggest new feature of this release is support for multiple cameras. Not only can you view multiple locally connected cameras, but you can connect to remote cameras and share your cameras with others. This is a beta release so use it an your own risk.