The blog is awesome (although it only started in  May 2006)! The samples are brilliant! you definitely need to check it out: http://thewpfblog.com

To tease you off I recommend you to start with the discussion of WPF vs Adobe Flash. Quite an interesting point of view from an experienced Flash developer/interactive designer.

Analyzed are:

• Video Capabilities
• Audio Capabilities
• 3D Support
• Programming Environment
• Data Binding
• Team Workflows
• Developer Tools
• Cross-Platform Support
• Communities and Support

Don't miss it: http://thewpfblog.com/?p=17

P.S. You can also check out http://theflashblog.com by the same author