The Big Bang Theory Sticker is about American television sitcom created by Chuck Lorre and Bill Prady. The show is centered on four characters that are living in Pasadena, California: Leonard Hofstadter and Sheldon Cooper, both physicists at Caltech, who share an apartment; Leonard and Sheldon's geeky and socially awkward friends and colleagues, aerospace engineer Howard Wolowitz and astrophysicist Raj Koothrappali.