I have been asked by many of you for the URL to watch the recordings of all the Mix '08 keynotes. Here it is:

The page has an interesting video of MIX08 Keynotes in Hyperspeed, which is a timelape video to see the whole process from bare ballroom through setup, rehearsals, keynotes, and then final teardown after the show. 

Read the complete post at http://www.venkatarangan.com/blog/2008/03/21/Watch+Mix+08+Keynotes.aspx