Tell Me Something I Don't Know is a trivia game show where the audience supplies the trivia. Stephen Dubner hosts from the stage at Joe's Pub in New York City, and the premise is plain: people come up from the crowd and tell the room something interesting, unusual or puzzling. The stage episodes start with a spoken refrain, a chain of questions about why anyone reads, travels or pays attention. Its answer is partly amusement and partly getting outside one's comfort zone, but mostly the urge to find out stuff. The facts swing wildly. One guest lays out a Manhattan real-estate saga involving a billionaire developer, his estranged wife and a 78th-floor unit at 432 Park Avenue that, by her account, lost several hundred square feet to him and his girlfriend. Another reports that Egyptians, who revered cats, mummified mice so the cats would have something to eat in the afterlife. Constanza Ocampo-Rader, a professor of anthropology at Carleton College, raises the subject of eating cat while acknowledging how horrifying that sounds to North American ears, and draws a double take almost at once. The show is curious about the people, too. Sass Goldberg explains a palindrome of a name: born Sari, nicknamed Sassy as a feisty baby, a name that later went on two New York fast-food restaurants. Dubner also peppers some guests with quick personal questions, from what they collect to what they overspent on without regret to what they believed for years before learning they were wrong. One guest collects Broadway cast albums, a couple hundred of them on vinyl. Another claims to be the opposite of a hoarder. A food conversation covers why a cook should listen for the sizzle in a pan and rules that anything on a stick ought to be grilled meat or frozen. One guest recalls first hearing another language, Hebrew, in 1969, and calls that moment the reason for becoming a linguist. The room laughs often, and the questions come fast. Each episode is built around a theme, and the titles show the reach: 'All About Bugs (of the Animal and Computer Varieties)', 'Farming Without Sun or Soil and Eating Manna From Heaven', 'Mind Games', 'Jon Batiste, Gail Simmons, and Strange Smells' and 'An Astronaut, a Catalan, and Two Linguists Walk Into a Bar…'. Not every installment happens on a stage. 'Extra 7: Corrosive Energy Drinks and Peruvian Cat Stew' moves to a studio in Midtown Manhattan, takes phone calls from around the country and seats a radio and television host beside Dubner, with AJ Jacobs also checking facts. Even its sign-off carries a joke, about a survey of dog people and cat people that never said whether the preference meant owning the animal or eating it. What a listener takes away is a pocketful of odd facts, each attached to the person who brought it.