I was reading through the Villain vs Villain thread, specifically shaunclinton's posting, and had an interresting brainstorm.
Does anyone have any experience running a game where the players take turns playing the villain? What I am thinking is that you have the regular GM, who doesnt change, and you have the heroes, but one of the players (rotating through the group) take turns in the role of the villain (playing a suitably evil character of course).
The "guest" villain would then coordinate with the GM to maintain campaign continuity, and provide all the necessary details of the "master plan", which the GM would simply run as the evenings regular episode. Henchmen and antagonists would be run by the villain player (so they aren't sitting idly while the rest of the group has the fun), and would run the master villain for the final confrontation. The GM's role becomes one of playing the NPCs, maintaining the storyline, and acting as impartial judge for the game.
I can see this as having some definite benefits, assuming the group plays their respective roles (ie, the villain probably still needs to be foiled in the end, etc.).
Anyone have any thoughts, opinions, or past experience with this sort of game?