This American Life aired an excellent piece on the MIT Mystery Hunt tonight. They’ll have it up on their archive page for a few weeks, but the free downloadable version will probably only be up for a week. The story about the mystery hunt is act II of a three act show, and starts around minute 32.
Update: I’ve been informed that this is a rebroadcast of a piece they originally aired last year, with a slight update at the end stating who won this year’s hunt (The Evil Midnight Bombers What Bomb at Midnight).