CGSociety reported on the release of Craft Camera Tools for GCS3 today.  As I was reading through the article I was surprised that I hadn't heard of this virtual camera hardware before, it's basically a small LCD attached to a fluid pan-tilt head with sensors.  When a camera man moves the physical device, the virtual camera moves to match it's orientation. Gamecaster has developed the hardware (GCS3) and Craft has just released the software to tie it in with Maya and Max.

Using some potentiometers and a few buttons, I might be able to make a similar device.  I need to play around with the camera controls to get an idea of how I want to arrange the sensors to best map the motion of a real world camera to the virtual one.