Letterman ran a new (to me anyway) gag tonight called 'will it explode'... I missed the first part, but think it was one of those deals where Dave and Paul try to predict if some object/s will explode when dumped off the roof of his building in New York.
Tonight was a bunch of fire extingushers... I saw it from across the room, but think they all stayed intact. Then later, going to commercial, they had a camera outside looking around at them.
After reading the account here of the gentleman and his wife having one come unglued, it scared the hell out of me just to watch it...
Just my .02 cents worth...
Erik