Published Boone Gorges’ talk on 3.0 Multisite and (over the weekend) Steve Bruner’s presentation on functions.php customization possibilities in 3.0 and Twenty Ten:

http://wordpress.tv/2010/05/31/boone-gorges-wordpress-3-multisite/
http://wordpress.tv/2010/05/28/steve-bruner-wordpress-3-0-and-twenty-ten-customization-techniques/

Tying these together is a blog post for today with a call for video submissions related to the upcoming release of WordPress 3.0: http://blog.wordpress.tv/2010/05/31/wordpress-3-video-submissions/