Sandy and Kara originally posted The Quarter Backs Quiz on July 2, 2007. The quiz has been taken more than 1.16 million times, from nursing homes to middle schools. It's by far our most popular challenge. As coin quizzes go, it's a movement.

We've received emails requesting a print version, so computer-illiterate friends can get in on the action. People have actually complained about states that were excluded. And over 900 folks left comments to report their scores.

So if you're not one of the 1.16 million, it's time to test your knowledge of spare change and state iconography.

Take the Quiz: Quarter Backs