CouponSherpa's "Place Your Bets: 40 Gut-Busting Restaurant Challenges for Free Food" is a list of 40 restaurants that are willing to bet you can't finish the unimaginable quantity of food they'll put on your plate. If you consume it all, you get it free. For example, this Mt. Olympus Burger from the Clinton Station Diner in Clinton, NJ. You and three friends have three hours to eat ~17lbs of meat (plus toppings) each, and if you do, you don't have to pay for the privilege.