First, we have the Raleigh in 2010 NASFiC bid.
Next up is the first part of the 2011 Worldcon presentations, with Patty Wells' Reno in 2011 Worldcon bid presentation. Seattle's presentation and the 2011 Worldcon Q&A will be coming later.
Part 2 of the 2011 bid material, Seattle's presentation by Bobbie DuFault, is also now available.
[The Q&A after the presentations is uploading as I head off to bed, but won't clear until sometime later on Tuesday at best.]
This of course assumes that we don't have people involved in them insisting that their presentations must not be made public, and that only The Right Sort of Fans be allowed to see them. If you think I'm joking, you aren't reading the SMOFS e-mail list.
Updated, 0125: Edited which videos are uploaded and which are pending.