The Superbowl is always one of the most watched TV events of the year so most people probably saw this live yesterday or have heard about it by now.
So you probably also know that Christina Aguilera screwed up the words to the US national anthem before the game.
What you might not know is that there is evidence this happened because she (or her handlers or the person who programmed the teleprompter or whoever) took the incorrect lyrics from Wikipedia. I love Wikipedia to death but authority is definitely not its strong suit!