Check out this project/tutorial about building your own face tracking camera!
Using your basic webcam, a handful of SparkFun products, and some clever programming in Arduino, Processing, and OpenCV, Ryan was able to create a video camera that will track your face as you move around the room. The products required are the following:
Ryan documented the build in a tutorial, so you can build your own! Check it out and let us know what you come up with. Feel free to leave any questions here or in the comments section on the tutorial. Cheers!