Richard Turner has posted a couple of information card / Windows CardSpace videos on his blog.

If you've kinda/sorta heard about CardSpace and information cards and want to get a quality intro with a demo and a description of what's happening behind the scenes, check out the first one.

http://blogs.msdn.com/richardt/archive/2007/03/18/cardspace-simple-demo-screencast-on-channel9.aspx

If you're looking to develop a site on IIS7 (meaning Windows Vista or Longhorn Server), and were curious about how to configure the site to support information cards. That video steps through how to configure your IIS7 server for sites that will accept information cards.

http://blogs.msdn.com/richardt/archive/2007/03/28/new-screencast-how-to-configure-iis7-for-windows-cardspace-sites.aspx