Shawn Weisfeld has recorded several presentations that I've been fortunate enough to present at various times. Shawn also stalks other active community speakers with that camera of his. Check out the complete list on the INETA Champs live site at http://newlive.ineta.org/. That's more than enough video content to fill a Saturday night or skip the Monday night football.
Here is a list of my presentations at http://newlive.ineta.org/Presentation/Speaker/26
Nuts and Bolts in XAML Part 1 - 7/6/2010
Nuts and Bolts in XAML Part 2 - 8/3/2010
Working with Data in Silverlight - 6/18/2010
Understanding Databinding with XAML in WPF and Silverlight - 3-2-2010