Although it may sound like either a Discovery channel show about the beginning of the cosmos or a hardcore porno where a woman takes on the 100 most well-endowed men in the business, The Big Bang Theory is neither of those things. Instead, it’s a sitcom about Leonard Hofstadter and Sheldon Cooper (Johnny Galecki and Jim Parsons), two geeky physicists who are clueless when it comes to talking to girls. Luckily their hot neighbor Penny (Kaley Cuoco) is willing to show them a thing or two. But she can’t show us anything, since The Big Bang Theory is on network television.