The Big Bang Theory Season 5 Episode 21
The Hawking Excitation
Howard is asked to work with Stephen Hawking during his visit to the university. Sheldon desperately wants to meet Hawking, but Howard's tired of Sheldon demeaning him. Howard decides that if Sheldon wants to meet Hawking, he will have to earn it by completing various tasks. Howard shares Sheldon's report with Hawking. Sheldon goes to meet Hawking, who informs Sheldon his report was incorrect. Sheldon faints.