WPF on steroids - Outlook clone
Two engineer from the Switzerland branch of Microsoft Ronnie Saurenmann and Ruihua Jin developed an Outlook clone using WPF, XAML, Expression Blend etc.
The online demonstration(XPAB) is available at this url. Check out the 90 pages tutorial about how you can do this (be sure to download the project files).
Technorati tags:
WPF,
MS,
Outlook,
dotnet