Like fairies, hamburgers are famously difficult to photograph because they can take thousands of forms and wear a variety of sauces. Capture ephemeral eats with today's Groupon: for $6, you get $12 worth of American fare at Louie's Grill & Bar.

All the items on Louie's Grill & Bar's menu come in under $10 and above and beyond the call of deliciousness. For a spectator's feast, game-day diners can pair a burger, such as the Big Lou, topped with grilled onions, pickles, mustard, and american cheese and served with fries ($7.99), or try the golden fried pickles, lightly battered, fried slices served with chipotle ranch ($6.99). Louigi's lasagna ensnares italian sausage and ground beef in ricotta and mozzarella cheese with garlic toast sentries at the ready ($8.99). Snack on macho chicken nachos ($8.99), so-called because they give diners the power to bench press an entire tool shed, or sink forks into the chunky chicken salad, brimming with crunchy cucumbers, walnuts, strawberries, and grapes ($7.99).

Louie's Grill & Bar features a family-friendly oxygen-nitrogen atmosphere, a convenient Cambridge Market location, and 15 flat-screen TVs tuned to riveting sports, such as power riveting, speed riveting, and the grueling endurance riveting.