Virtual Desktop Infrastructure

I was looking at getting into a peek at what is a Virtual Desktop infrastructure and its use cases / applications.

Have a look at these videos to get a preview of what it means

Part 1:

http://www.youtube.com/watch?v=zGDwD9afZ94&feature=PlayList&p=00122D416E40AD94&index=11

Part 2

http://www.youtube.com/watch?v=IRNR0KEOBQ4&feature=related