Spycams are one of the stranger things that people have hooked up on the web. From a kitchen in Berkley to a basement in Soulard, you can watch people brew beer, wait for a bus, or see how much coffee is left.
Robots with cameras are also plentiful, this is one of the neatest. Xavier wanders the halls of Wean Hall at CMU telling bad jokes and taking pictures. Maybe the robotics guys in Pittsburgh can help explain the noises in the basement.