I just had the opportunity to sit and discuss SharePoint 2010 UPA with Spence and Bill, bellow is the synopsis and link to access the video:

About this Video

In today’s episode, SharePoint Product Manager Bill Baer interviews SharePoint Certified Masters,  Ali Mazaheri and Spencer Harbar about user profiles and user profile applications in SharePoint 2010. Listen in as they discuss what user profiles are, their importance, how to manage them and how to configure profile synchronization.

http://technet.microsoft.com/en-us/edge/technet-radio-user-profiles-in-sharepoint-2010.aspx