National Punctuation Day 2010: Test your punctuation knowledge

Today is National Punctuation Day. Don't know how to celebrate? Fortunately, the holiday has its own official meat loaf recipe.

Click here to learn how to make Punctuation Meat Loaf. Cooks are naturally encouraged to sculpt the meat into a question mark. Or exclamation mark, if you prefer.

Now in its seventh year, the event's goal is simple: celebrate punctuation. The holiday's founder, Jeff Rubin, writes company newsletters for corporate customers.

Last year, organizers had a baking contest. This year, it's a haiku competition. You have until Sept. 30 to write a haiku ode to the hyphen. Or apostrophe. Or any other form of punctuation you prefer. Get more details here.

Think you're a punctuation guru? Click here to take a quiz.