Like religion, economics, and politics, pizza is something everyone can agree on. Celebrate universal ideas with today’s Groupon: for $15, you get $30 worth of pizza at Greenville Avenue Pizza Co.

Keeping its doors open until the early morning hours, six days a week, Greenville Avenue Pizza Co.’s dough doyens flip, top, and bake every pie by hand, using only the freshest ingredients and spices. Leading off the menu, are the shop’s 12-inch or 16-inch pizzas ($9.99–$19.99), arriving to your table customized or in one of the restaurant’s signature varieties. The Mes-Kin sates south-of-the-border cravings by topping the cheesy circle with hamburger, poblano and jalapeño peppers, red onion, tomato, cilantro, sour cream, and cheddar cheese, while the greek pizza caters to appetites on the other side of the Adriatic with sundried tomatoes, pepperoni, feta, and the first passage of Homer’s Odyssey spelled out in greek olives. Slices of pizza ($3.75 for cheese, $6.50 for unlimited toppings) are also on hand to fill the meal-mitts of diners on the go or players in a live-action game of Trivial Pursuit.

On the other end of the sustenance spectrum, the classic calzone, stuffed with pepperoni, italian sausage, and bell peppers ($8.95), sets up for the meatball sub ($7.95), smothered in marinara and provolone, and named Best Sandwich in 2008 by the Dallas Observer. For spicier handheld fare, chicken wings ($11.95 for 14) come drenched in a choice of barbecue sauce, teriyaki, or Sammy’s orange chipotle, as Greenville’s chefs prepare hand-cut french fries ($2.95) and gently tie each homemade garlic knot ($3.50 for three) into a pratt, windsor, or ascot.