one thing i sometimes used to do was set my webcam to take pictures of me evry five or ten minutes whilst i played a game or did something else. It was very amusing seeing my different facial expressions or poses.
its a nice experiment for yourself to see your own reactions or how dumb you sometimes actually look whilst working/playing at your computer. Doesn't involve to much lagg either and you can always delete the photos again.
Nothing lost if u give it a try.