Ryan did a session on the new version of the D7 Commerce Module. He was the original writer of the Ubercart package - a main stay of ecommerce sites in Drupal 6. His self deprecating humour at the beginning of the session was charming as Ubercart was his first segue into many aspects of Drupal and it has become the defacto leader of the pack for Drupal ecommerce sites.
His new offering is looking very slick, making use of fields in core for example, and while Ryan tells us it isn't quite ready for primetime (he's still building out features) it looked pretty good.
Video from this session is below in seven sections. The original first video was only 4 seconds long.