As a benchmark for cultural religious literacy, take this quiz from Pew's Religion and Public Life Project.

You'll be surprised at how easily you'll be in the top 1% of Americans for religious knowledge.

Here's more thought fodder on the topic:

The Independent:"It's no laughing matter: Britain has become a nation of religious illiterates 'who are baffled by Biblical references in Monty Python film The Life of Brian'"

The Atlantic:"Study Theology, Even if You Don't Believe in God"

The New York Times:"The Book of Books: What Literature Owes the Bible" (Old, but oh-so-good).