Families can agree on eating pizza for dinner, even if they're divided about whether the moon is a satellite or the earth’s malformed twin. Ensure domestic harmony with today's Groupon: for $5, you get $10 worth of pizza at Crash Landing Pizza.

Crash Landing Pizza's skilled chefs hand throw homemade dough each morning, then bedeck the discuses with seasonal gourmet toppings. Crash Landing's chefs customize both single slices and entire pies to suit every palate, although requesting a pizza that is actually lasagna is inadvisable. Delve into a 14-inch pizza garbed in layers of mushrooms, pepperonis, and olives, or veer into untapped terrain with bulgarian feta cheese, freshly made pesto, or niçoise olives ($14.40; toppings $1.25 each). Eighteen-inch crusts also eagerly await the addition of fresh, seasonal toppings, from roasted corn in the summer to candied snowman tears and yukon potatoes in antisummer ($19.55; toppings $1.75 each). For eating on the go or maximizing the diversity of toppings, slices of piping-hot pies are available all day (price varies with toppings).