Christina Aguilera's "National Anthem" at the Super Bowl

Well, I'm sure by now you've all been made aware of Christina Aguilera's feaux paus before the Super Bowl, but if you haven't, the mistake she made was singing the wrong words.  To be exact, she was supposed to sing, "O'er the ramparts we watched, were so gallantly streaming" but instead skipped that and went into, "What so proudly we watched at the twilight's last gleaming".  Oops.  At least she sounded good, right?  The performance is down below.