Penny and Leonard get upset at Sheldon for intruding in their relationship.
Leonard and Sheldon are brilliant physicists - geniuses in the laboratory, but socially challenged everywhere else. Enter beautiful, street-smart neighbor, Penny, who aims to teach them a thing or two about life. Despite their on-again, off-again relationship in the past, Leonard believes he's found true love with Penny. Even Sheldon has found a female companion, entering into a "Relationship Agreement" with neurobiologist Amy Farrah Fowler. In their free time, Leonard and Sheldon continue to enjoy frequent trips to the comic book store and fantasy role-playing games with their ever-expanding universe of friends, including fellow scientists Koothrappali, Wolowitz and Wolowitz's adorable microbiologist wife, Bernadette.
Click HERE to SUBSCRIBE to The Big Bang Theory channel: http://bit.ly/XR79ht Click HERE to watch FULL EPISODES: http://bit.ly/UJbGXl BBT on Facebook: https://www.facebook.com/TheBigBangTheory BBT on Twitter: https://twitter.com/bigbang_cbs
Get new episodes of shows you love across devices the next day, stream live TV, and watch full seasons of CBS fan favorites anytime, anywhere with CBS All Access. Try it free! www.cbs.com/all-access/?ftag=AAMa9272ff