We played Fiasco last night. Fiasco is a story-game in which the players create scenes in movies using a variety of choices taken from the book. The settings are mainly inspired by Coen Brothers movies, in that they present a situation and often times chaotic things happen and lots of comical tragedy occurs.
There are no rules for conflict resolution, so everything is done through scene setting and improvisation. It's basically LARPing while sitting around a table.
And it was awesome.