<article> <figure> <img src="http://image.tmdb.org/t/p/original/ngoiHQul4QetfA62SdmZZOdDFAP.jpg" title='The Big Bang Theory' alt='The Big Bang Theory'/> </figure> <h1>The Big Bang Theory</h1> <p>The Big Bang Theory is centered on five characters living in Pasadena, California: roommates Leonard Hofstadter and Sheldon Cooper; Penny, a waitress and aspiring actress who lives across the hall; and Leonard and Sheldon's equally geeky and socially awkward friends and co-workers, mechanical engineer Howard Wolowitz and astrophysicist Raj Koothrappali. The geekiness and intellect of the four guys is contrasted for comic effect with Penny's social skills and common sense.</p> <details><summary>Runtime: 22</summary> <summary>First air date: 2007-09-24</summary> <summary>Last air date: 2019-05-16</summary></details> </article>