Riley and Hazel bring home a lost dog with the hope of keeping him, which doesn't sit well with Al. Also, Art goes on his first date with Lois. ...

Al fears the worst when he doesn't hear from his family in Afghanistan for a few days. Also, Riley realizes how hard it must have been for his own family while he was dep ...

When Hazel starts planning her 11th birthday party, she learns that Al doesn't know when his birthday is so she invites him to share the day with her. Also, Riley tries t ...

As Jake's twelfth birthday approaches, Alan is still smiling ear-to-ear over his sex life with 22 year-old hottie Kandi, even when he's forced to explain to his son what ...

Penny tries to seduce an abstaining Leonard to ruin his donation for her ex-boyfriend, Zack (Brian Thomas Smith), and his wife, Marissa (Lindsey Kraft). Also, Wolowitz, B ...

In Penny, Amy and Bernadette's girls' night out, they run into Penny's old boyfriend, Zack, who tells them that he has sold his company and retired a wealthy man, but per ...

Sheldon tries to teach the other guys a lesson after they cut him out of a potentially valuable Bitcoin investment seven years ago. ...

An event demonstrates to Sheldon that his cognitive abilities are weakening. This thought dismays him for many reasons, including the fact that his time to come up with a ...

Penny has received tickets to a wine tasting, and has invited all her friends to go with her. Everyone accepts except Sheldon, who has no interest, and Bernadette, who ca ...

Just as he is about to head to the airport, Sheldon decides to tell his friends that he is going to Texas to fill in for his brother-in-law at his sister's at home baby d ...

Howard invites all his friends over to his mother's house for Thanksgiving. He does have ulterior motives: his father-in-law, Mike Rostenkowski, with ho he has nothing in ...

It's Thursday night, which in Sheldon's world means that the guys are coming over for pizza. However, Leonard informs him that he's going over to Raj's to hang out with P ...

Penny starts dating Zack again. Used to being the target of bullying, Leonard, Sheldon, Howard and Raj instead bully Zack through their implications to him that he's stup ...

Amy experiences strange symptoms, which she believes are signs of a flu. They include an elevated heart rate, sweaty palms, dry mouth, and localized vascular throbbing. A ...

Penny and Leonard are still at the stage of their post-coitus relationship where they feel awkward doing friend type things together. Regardless, when the guys experiment ...

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