At a customer we are some creating a mini series of information sessions about key developments in the Microsoft development space
Neal Cross demonstrated a nice mortgage gadget last night. Here is the link to the programmable web mashup site Neal was using.
One example of a mashup Spyk was demonstrated by Michael Kordahi at the last event. Michael also showed a number of WPF applications.
Here is one example application he showed (on his blog there are many more):
Michael went on to demonstrate WPF/e now known as Microsoft Silverlight (cross browser, cross platform presentation framework):
If you would like to create your own WPF applications, you can download a trial version (the release candidate) of the new set of Microsoft Expression tools (Blend)
To develop in WCF you will need:
Lastly you can see a wealth of information and tools on WCF here
There are a number of new community initiatives coming out. Keep ahead of the game here: