In 1992, Steve Ells was a classically trained chef working in a high-end restaurant in San Francisco. But after eating a burrito at a local taqueria, he got an idea: to sell burritos and earn enough money to open his own gourmet restaurant. The first Chipotle opened in Denver the following year. Bringing his culinary training to taqueria-style service, Steve Ells helped transform the way we eat fast food. PLUS for our postscript "How You Built That," how Alexander Harik turned his mom's recipe for za'atar spread—a fragrant Middle Eastern condiment—into Zesty Z: The Za'atar Company.

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In 1977, 23-year-old Jake Carpenter set out to design a better version of the Snurfer, a stand-up sled he loved to ride as a teenager. Working by himself in a barn in Londonderry, Vermont, he sanded and whittled stacks of wood, trying to create the perfect ride. He eventually helped launch an entirely new sport, while building the largest snowboard brand in the world. PLUS for our postscript "How You Built That," how Jane Och solved the problem of guacamole turning brown, with a container that removes air pockets, the Guac-Lock.

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At age 22, Whitney Wolfe helped launch Tinder, one of the world's most popular dating apps. But a few years later, she left Tinder and filed a lawsuit against the company alleging sexual harassment. The ensuing attention from the media – and cyberbullying from strangers – prompted her to launch Bumble, a new kind of dating app where women make the first move. Today, the Bumble app has been downloaded more than 20 million times. PLUS for our postscript "How You Built That," how Michelle Innis invented De-Fishing soap to freshen up her fisherman husband, and how it wound up in WalMart.

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In 1989, college senior Wendy Kopp was trying to figure out how to improve American public schools. For her senior thesis, she proposed creating a national teaching corps that would recruit recent college grads to teach in underserved schools. One year later, she launched the nonprofit, Teach for America. Today, TFA has 50,000 alumni, a budget of nearly $300 million, and continues to place thousands of teachers across the country. PLUS in our postscript "How You Built That," how a game of Secret Santa led Chris Waters to create Constructed Adventures, elaborate scavenger hunts for all occasions.

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In 1983, two hippie farmers decided to sell homemade organic yogurt to help raise money for their educational farm in New Hampshire. As the enterprise grew into a business, it faced one near-death experience after another, but it never quite died. In fact it grew — into one of the most popular yogurt brands in the US. PLUS in our postscript "How You Built That," how Indiana Jones inspired Steve Humble to sell secret passageways for a living.

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During his first visit to Seattle in 1981, Howard Schultz walked into a little coffee bean shop called Starbucks and fell in love with it. A few years later, he bought the six-store chain for almost 4 million dollars, and began to transform it into a ubiquitous landmark, a "third place" between home and work. Today Starbucks is the third largest restaurant chain in the world, serving about 100 million people a week. Recorded live in Seattle.

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We're hard at work planning more live shows, so we bring you one of our favorites from last year: Southwest Airlines. In 1968, competitors sued to keep Herb Kelleher's new airline grounded. After a 3-year court fight, the first plane took off from Dallas. Today Southwest Airlines operates nearly 4,000 flights a day. PLUS in our postscript "How You Built That," how Monica Mizrachi and her son Solomon built EzPacking, a family business selling packing cubes.

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Years after his father created a hit singing group of anthropomorphic rodents called The Chipmunks, Ross Bagdasarian Jr. made it his mission to revive his dad's beloved characters. Over the last 40 years, Ross Jr. and his wife Janice have built The Chipmunks into a billion dollar media franchise – run out of their home in Santa Barbara, California. PLUS in our postscript "How You Built That," how Daniel Clark-Webster and his three friends came up with RompHim – a company specializing in male rompers.

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Sadie Lincoln and her husband, Chris, had what seemed like the perfect life – well-paying jobs, a house in the Bay Area, two kids. But one day they decided to sell everything and start a new business called Barre3: a studio exercise program that blends ballet with pilates and yoga. Today, Barre3 has more than 100 studios across the country. PLUS in our postscript "How You Built That," how a husband-and-wife team experimented with fruit, spices and vinegar and came up with a gourmet ketchup line called 'Chups.

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We're hard at work planning our upcoming live show, so we bring you this favorite from the last year: VICE. Suroosh Alvi was a recovering addict when he started a scrappy underground magazine in Montreal. It grew into a multi-billion dollar company that has shaken up the world of journalism. PLUS in our postscript "How You Built That," we check back with Kent Sheridan of Voila Coffee, a company aiming to make instant coffee with the quality of a four-dollar pour over.

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