Last night I had to run something in place of our current Deadlands: Hell on Earth game because I'd forgotten some players wouldn't be around for a few weeks, who happened to be quite central to the current plot. So I was faced with needing to very quickly come up with something we could play that would let me think up story and stats easily.
So we pulled out the character sheets for our Dresden Files game and in about 20 minutes I had the players looking into the activities of DJ Death, a nightclub DJ and aspiring necromancer using allies to kill college students to add to his zombie forces.
Next week they'll be taking him on face to face. I love this game, and how easy it is to run with, even at short notice.