Last night I had the chance to DM the Castle of the Mad Archmage at Dreamation, and there's a second session scheduled for tonight. I'll give a full report on both in a day or two, but just wanted to drop a quick note that last night's session rocked! Both sessions were already filled by Friday afternoon, and alternates were actually showing up to see if they could get in.
There really are a lot of folks hungry for 1E out there. If you can, try running a game at your next con. You might be surprised by the response.