Daniel,
0. My experience with various unConferences includes those with a mix of prepared sessions (where some people seed the agenda with topics) and open sessions (determined onsite early in the day, when everyone is present, and the size/equipment available for different meeting spaces is known). I'm assuming your request is to populate the prepared sessions. Are you planning to have all sessions pre-determined? Or will there be opportunities onsite to add more? (I'm also familiar with the model where all sessions are determined onsite, but I'm guessing from your request that this model is not the one that will be used on March 21.)
Here are a few ideas for sessions
1. Speed Preso (a la Speed Dating) - 3-5 minute round robin sessions where you get a chance to present successively to others attending the session. (When you don't complete your presentation within the time limit, you'll get practice at tightening up the Presentation to fit the time limit)
2. Lessig-style (many slides, limited text per)
3. Image-style (a la Duarte or Presentation Zen)
4. Audience dimensions that influence presentation format/style (physically local with presenter; physically remote; mixed; temporally remote (not live))
5. Disability access to a) either 2 or 3 above, or to b) speech/sound accompanying recorded or remote-presentations
There's a start.
-- Nancy
--
Nancy Frishberg nancyf at gmail dot com