Penn and Teller have been astonishing and entertaining audiences for almost 40 years. Yes, they're magicians, but they're also comedians. The more talkative Penn is known to many for his appearances on reality TV shows, while hearing Teller talk requires an in-person visit. Their show at the Rio has been running for over a decade, putting them among the top entertainers for longevity in Las Vegas. They keep refreshing the act to keep it feeling new--if you've been before, it's probably changed. Before the show, you can check out the props that will be used on stage--see if it helps you figure out the magic. On any given night, the act might include guns, knives or fire, but each night it certainly includes a large dose of entertainment.