Want to understand the magnitude of the Vista platform?
Want to watch really cool demos of many Vista technologies?
I really, really (did I say really?) recommend watching the keynote from the PDC. It's a 3:30 web cast featuring great information to Windows Vista and Office 12 technologies. You will learn about key technologies as Atlas, InfoCards, WCF, WPF, WPF/E, Peer to Peer and much more.
If you have the time, try watch it all, but if you are really short on time I tried to mark a few important time markers for you:
Windows Vista Demo – 0:31:10
Office 12 Demo - 0:49:35
Atlas - 2:36:00
Linq Demo - 2:15:00
Indigo (WCF) Demo - 2:26
Avalon (WPF) - 1:51:30
http://www.microsoft.com/events/executives/billgates.mspx