Here is another one.....explain this one please...it has me baffled.
http://youtube.com/watch?v=6t-Nr4_GUsA&mode=suggested_some&search=
step1: set up camcorder on tripod
step2: make entire screen of laptop a bright color (green or blue)
step3: film some static image of the desk
setp4: (with camera in same place) move laptop arround (with said above colored screen)
step5: capture footage into your fav video editing app (final cut, premiere, avid, etc) and use the chroma key funtion to replace the empty video (step 3) at 100% with the laptop
step6: profit
if i get bored tonight I might play with it