Locals and tourists alike have flocked to this Boulder institution - a huge yet divey space filled with kitschy items, antiques and movie props - since it first opened its doors in 1975. The burgers are the thing to order here, especially during the Dark Horse's legendary, long-running "Burger Madness" on Tuesdays, Thursdays and Sundays, when five bucks gets you a hamburger or cheeseburger plus fries, salad or pasta salad. If you feel adventurous, try the Jiffy Burger (peanut butter, bacon and provolone); if you're a little more cautious, go for the Avocado Burger (avocado, green chiles, sour cream and pepper Jack). There are other menu options, too, including the roast pork sandwich (pulled pork and BBQ sauce on a toasted roll) and Buffalo wings. Take note: The kitchen is self-serve, so you'll need to place your order at the service window. There are plenty of distractions, from karaoke to live music to watching the game on one of eleven HDTVs or on the projection TV in the back bar. And the wacky decor (including mens' and ladies' room signs designed to confuse the inattentive) is a sure conversation-starter.