Penny wishes Leonard a happy birthday which she knows is this upcoming Saturday, when she expects him to at least come in for his free piece of birthday cake at the restaurant. She is shocked to learn that Leonard not only does not celebrate his birthday, but that he's never had a birthday party. Regardless of Leonard's wants, Penny decides to throw him a surprise party. Although she gets help from Sheldon, Howard and Raj, the preparation for the party does not go to her plans, including needing to help Sheldon buy a gift, Howard not being able to get Leonard out of the apartment, and Raj not being able to decorate the apartment since Leonard's there. Will Leonard enjoy his first birthday party after all this difficult effort? Written by
Did You Know?
Sheldon makes a language error by using the term "co-conspirator". Due to his hyper-intelligence he would know the correct term for a person conspiring with others is simply a conspirator. See more
When Howard comes to take Leonard out so Raj can set up for the party, Leonard is seen playing his Xbox 360 but as you can see there is only one connection coming out of the machine. There is no power cord on the Xbox only the audio/video cord. See more
Okay, I get it. I know how the world works. How 'bout if I were to introduce you... to the man who freed your people?
[shows a five-dollar bill
Unless my people were freed by Benjamin Franklin and his five twin brothers, you are wasting your time!
In the opening scroll of the time line when it gets to 91,000 there is a mistake the dates read 93,000BC 92,000BC 91,0009C 90,000BC for some reason 91,000 is a 9c not a BC. See more
History of Everything
Written by Barenaked Ladies
Performed by Barenaked Ladies
[Series theme song played during the opening titles] See more