Can it be?  Fantasy Roleplaying in the manner of D&D onstage?  Yes! Apparently an Improv group known as Dungeon Master, has an interactive Fantasy Roleplaying show in which the audience can come in costume, fill out character sheets in the lobby and jump onstage and roleplay with the cast and a Dungeon Master!!  How have I not heard of this??  I just found out about it at a "Lost" Season Finale party last night!  Here's their website:http://bit.ly/dqQ7kv.