Legendary KISS guitarist Ace Frehley played the national anthem prior to yesterday's Kansas City Chiefs vs. New York Giants game in Arrowhead Stadium. The announcement before the game said it was the first time in NFL history he has done the national anthem for an NFL game.
You can view more videos with different angles here.
I've learned KISS fans are pretty dedicated so I imagine there were a few folks who came just for the anthem (not that I can blame them).
Judging by some of the fan reaction to this, the national anthem might have been the best part of the game.