Databases, D7CX, and DrupalCon
Do you have a Drupal module you want to upgrade to Drupal 7?
Do you want to know how to leverage the Drupal 7 database layer to make your module better?
Will you be at DrupalCon?
There should be about 500 of you that meet that criteria, by my estimate. More than enough for a BoF. :-)