Leonard y Sheldon son dos físicos superdotados que comparten piso. Ambos son capaces de calcular las probabilidades de existencia de vida en otros planetas, pero son incapaces de relacionarse con los demás y especialmente con las chicas. Penny, su nueva vecina, es el polo opuesto a ellos, por lo que su llegada al edificio alterará la tranquila vida sentimental de Leonard y el desorden obsesivo-compulsivo de Sheldon.
Fecha de emisión: 2008-09-22
Duración: 22 min
Sinopsis: Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.
Fecha de emisión: 2008-09-29
Duración: 21 min
Sinopsis: A jealous Leonard reacts to Penny's new guy by rebounding with Leslie.
Fecha de emisión: 2008-10-06
Duración: 21 min
Sinopsis: Sheldon creates a monster when he introduces Penny to online gaming.
Fecha de emisión: 2008-10-13
Duración: 21 min
Sinopsis: Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.
Fecha de emisión: 2008-10-20
Duración: 20 min
Sinopsis: Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
Fecha de emisión: 2008-11-03
Duración: 21 min
Sinopsis: Sheldon and the gang are confused when a young grad student is attracted to him.
Fecha de emisión: 2008-11-10
Duración: 21 min
Sinopsis: When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.
Fecha de emisión: 2008-11-17
Duración: 20 min
Sinopsis: Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.
Fecha de emisión: 2008-11-24
Duración: 21 min
Sinopsis: Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.
Fecha de emisión: 2008-12-08
Duración: 21 min
Sinopsis: Leonard asks Penny for advice when his new relationship starts moving too fast.
Fecha de emisión: 2008-12-15
Duración: 21 min
Sinopsis: Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.
Fecha de emisión: 2009-01-12
Duración: 21 min
Sinopsis: Penny's criticism of Wolowitz's romantic life pushes him into depression and AWOL for a fighting robot battle the rest of guys are depending on him for.
Fecha de emisión: 2009-01-19
Duración: 21 min
Sinopsis: Sheldon creates a scientific procedure for making friends.
Fecha de emisión: 2009-02-02
Duración: 21 min
Sinopsis: Sheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.
Fecha de emisión: 2009-02-09
Duración: 21 min
Sinopsis: Leonard and Penny are drawn together after a disastrous visit from Leonard's mother.
Fecha de emisión: 2009-03-02
Duración: 21 min
Sinopsis: A paintball game leads to a fight between Sheldon and Penny, and romance for Leslie and Wolowitz.
Fecha de emisión: 2009-03-09
Duración: 21 min
Sinopsis: Leonard, Sheldon and Wolowitz are ecstatic to learn that a famous science-fiction actress (Summer Glau) is on board the train they are taking to San Francisco.
Fecha de emisión: 2009-03-16
Duración: 20 min
Sinopsis: Penny's home business turns into a complete nightmare when Sheldon takes over.
Guionista: Steven Molaro
Fecha de emisión: 2009-03-30
Duración: 20 min
Sinopsis: Penny squares off with a new beautiful female neighbor who may become the building's "new Penny."
Guionista: David Goetsch
Fecha de emisión: 2009-04-13
Duración: 20 min
Sinopsis: A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.
Fecha de emisión: 2009-04-27
Duración: 22 min
Sinopsis: Leonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas, and Sheldon becomes locked out of his apartment and must stay with Penny.
Fecha de emisión: 2009-05-04
Duración: 19 min
Sinopsis: Penny's second date with Stuart sees her making a comment that gives Leonard new hope for a relationship with her. Wolowitz realizes there's a crucial error in a NASA project he's working on.
Guionista: Eric Kaplan
Fecha de emisión: 2009-05-11
Duración: 21 min
Sinopsis: The guys' plan to work over the summer at the North Pole makes Penny revaluate her feelings for Leonard.
