Colleague John Savill has put together a great 20 minute demo showing how (and why) to use  Hyper-V Dynamic Memory and Remote FX (both available now in Windows Server 2008 R2 SP1 Beta). Click the image to play the video.

image 

At around the 15 minute mark check out Disney World in 3d over RFX:

image

And about 2 minutes later, check out the Halo 2 over RFX action.

image