Additional cast has been confirmed - listed below - and you can now submit a question to the moderator, and if picked, it will be included in the evening’s discussion. 
Amber Benson, Eliza Dushku, Nicholas Brendon, Charisma Carpenter, Emma Caulfied, Sarah Michelle Gellar, Seth Green, Alyson Hannigan, James Marsters, Michelle Trachtenberg, Marti Noxon and Joss Whedon.
It will take place on Thurday, March 20, 2008 at a new location: the Cinerama Dome at the ArcLight in Hollywood, CA - visit TicketWeb.com to purchase tickets for the event; scroll down and tickets are between $45-60 for non-members.