My good friend Denny Boynton is putting on this event.  If you are in that neck of the woods then absolutely go check it out.  Here is more info from his blog:

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I'm very pleased to announce that we'll be hosting a two day free training event called XamlFest at the St. Louis Microsoft offices from Thursday, January 29th to Friday January 30th. This will be a classroom style event led by fellow Softie John Pelak and, to a lesser degree, myself. We'll be going in depth on the XAML markup language and how it is used in both WPF and Silverlight 2.0 applications. We will also go deep on how to use Expression Blend to visually design application interfaces.

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http://blog.dennyboynton.com/post/XamlFest-Coming-to-St-Louis-in-January-2009.aspx