Dr. Sheldon Lee Cooper (Jim Parsons) is a theoretical physicist. His bunkmate is Leonard Hofstadter (Johnny Galecki). While they are both brilliant, neither has a solid grasp on the innuendos of social networking.
Sheldon is a stickler for order and routine. He loves to beef up sarcasm and irony into his jibes, and shows off his intelligence with a complete absence of humbleness. He has several degrees and an IQ that can’t be tested on standard IQ tests. His resume reads like the syllabus of a college student, with impressive knowledge of biology, chemistry, physics, calculus and several other subjects.