Here's a fun link - a 15 question quick quiz to test your general religious knowledge. When you're done you can see how your results compare to the general population, to people your age, to people of differing education levels, etc.
http://features.pewforum.org/quiz/us-religious-knowledge/index.php?q=16
http://features.pewforum.org/quiz/us-religious-knowledge/index.php?q=16