I recently bought the DVD and found it has two duets by Stevie and Vanessa - the first is 'The One' and the other is a cover of the song 'Circle Dance', originally by Bonnie Raitt. I don't know if this has been posted already, though. If not, you should definitely check it out.
http://www.youtube.com/watch?v=FNYEGR-xIxk
