Use the Atrix screen as the touchpad/keyboard when docked, no mouse or keyboard needed!

[irishtexmex]

Found this little gem while watching one of the lengthier videos online. If you have an HD MultiMedia dock but no keyboard or mouse to use with it, you can use the docked Atrix's screen as the touchpad (with 2 finger scrolling!), and when text entry is needed an onscreen keyboard pops up on the Atrix.

Check out the clip below (if it doesn't skip ahead automatically, go to 19:18 mark):
http://www.youtube.com/watch?v=TL9dUfHoM-8#t=19m18s