M O V I E - S E R I E S on Instagram: "The Big Bang Theory (TBBT) 2007–2019 - Comedy/Sitcom The Big Bang Theory is a beloved sitcom that follows socially awkward physicists Leonard Hofstadter and Sheldon Cooper, roommates at Caltech in Pasadena, California, whose geeky world is upended when aspiring actress Penny moves in across the hall. Leonard is immediately smitten, while Sheldon remains stubbornly detached from social norms. Along with their friends—aerospace engineer Howard Wolowitz and as