Penn and Teller at Theater at MGM National Harbor

Not exactly comedians but more than just magicians, Penn & Teller bring a quirky combination of laughs and illusions to every performance. You're ready to laugh before they even trot out their tricks, with the big, brash Penn Jillette towering over his staid, unspeaking partner Teller. And once they dip into the bag of tricks they've been perfecting since the 1970s, you're simultaneously dazzled and delighted. Whether they're working with things like magic bullets, nail guns, and straitjackets, or just employing a seemingly ordinary deck of cards to demonstrate some sleight of hand, the duo can make you doubt your own senses as they appear to make the impossible happen right before your eyes. Sometimes they toss a touch of danger into the mix, and sometimes they simply play the whole thing for laughs, but whatever illusion they're unveiling, Penn & Teller can always pull it off.