Sheldon Cooper

Dr. Sheldon Lee Cooper is a fictional character on the CBS television series The Big Bang Theory, portrayed by actor Jim Parsons. Parsons won an Emmy Award in 2010 for this role.

A Caltech theoretical physicist, Sheldon is Leonard Hofstadter's (Johnny Galecki) roommate and colleague. They live across the hallway from Penny (Kaley Cuoco).

Sheldon is distinctive for his overtly intellectual personality: he is calculating and cynical, he exhibits a strict adherence to routine, a lack of understanding of irony, sarcasm and humor, a habit of constantly expressing admiration for his superior intellect (which is sometimes found offensive by the other characters), and a complete lack of humility; these characteristics are the main sources of his character's humor and the center of a number of episodes. He has been described as the show's breakout character. Several reviewers have cited Sheldon presenting the qualties of Asperger Syndrome and Obsessive-Compulsive Disorder.

Aside from his idiosyncrasies, Sheldon is purely logical. He has an IQ of 187. Sheldon has an overly extensive general knowledge, such as shown by his comments regarding various details of anecdotal knowledge (for instance, about the introduction of the fork into Thailand). Despite his intelligence, Sheldon is usually inept in most social interactions.