game-changer

Did you see the debate on Thursday night between Joe Biden and Sarah Palin? Joe Biden did very well, and Sarah Palin was able to hold her own--but that's about it. Overall, the debate wasn't a game-changer. "Game-changer." This expression has been around for a while, but lately it's getting used more often by the media and the public. A "game-changer" is an event or a person that suddenly changes everything or moves events in one direction. �