11 18 2018-03-29 Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical company. Also, Leonard, Koothrappali and Wolowitz do everything in their power to meet him, while Sheldon thinks he is the victim of an April Fools prank. 6557317 20934 https://artworks.thetvdb.com/banners/episodes/80379/6557317.jpg false