After overhearing that Wil Wheaton is entering a trading-card competition, Sheldon decides to enter it himself. Meanwhile, Penny sets up one of her friends on a date with Wolowitz.

Sheldon becomes Leonard’s teacher in order to understand football, while an incident with flying a kite threatens Howard and Raj’s friendship.

A squabble between Leonard and Penny sees Sheldon playing mediator, though out of his own incovenience from the sitiation rather than altruism.

With Leonard, Howard and Raj away camping in the desert, an injured Penny has only Sheldon to rely on.

After he’s humiliated on National Public Radio, Sheldon vows to destroy Kripke, while Wolowitz tries not to destroy his new relationship with Bernadette.

Penny gets help from Sheldon in order to understand what Leonard’s work is, while Wolowitz develops a jealousy when Leonard starts hanging out with his new girlfriend.

A Christmas visit from his mother has Leonard discovering she’s kept a lot of news from him that she shares with Sheldon and worrying if she’ll approve of his romance…

When Sheldon learns the guys tampered with his expedition data he got from the arctic, he leaves to Texas in disgrace. This results in the guys following him, which threatens…

Leonard and Penny struggle to recover from an awkward first hookup while Sheldon and Howard stake their best comic books on a bet to determine the species of a cricket.

Howard and Raj visit a Goth nightclub to pick up women while Sheldon attempts to build a better Penny using chocolate-based behavior modification.

Raj must find a new job or be sent back to India, but Sheldon has a solution, which leaves Leonard and Penny dealing with Howard as a third wheel.

The firm celebrates as they hit a milestone. Peggy and Paul compete to secure the same account.

A former client makes a return; Betty and her kids go on a trip; and Joan and Greg make plans for their future.

Peggy’s taste in men proves questionable. Pete has to make a big decision about his career and a candidate makes a big impression on Don.

Don has a big meeting with Connie about their future relationship. Betty is the beneficiary of some interesting advice and Pete has a serious sit-down with some clients.

Sally’s behavior causes concern for Don and Betty. Betty has an eye-opening dream that has a strange effect on her. Pete tries to work a new business angle in his…

Sterling Cooper receives a surprise visitor; Sally has been spooked by something (or someone); and Joan receives some shocking news.

Betty tries her hand at local politics. Don is forced into thinking about the future. Peggy receives a luxurious gift.

Don decides to include Betty on a company business trip. Pete lends a hand to a neighbor in his apartment building.

There is trouble for Don and Sal in giving their clients what they ask for. Meanwhile, Betty hosts a fundraiser.

Don’s father-in-law pays a visit to his daughter’s family. Peggy works hard on a campaign while the firm tries to decide if they will accommodate an unusual request from a…

The writers make an attempt to stave off late-night boredom during a mandatory overtime session. Roger throws a party as Joan and Greg host their own party. Sally has a…

Don and his father-in-law cross paths. Meanwhile, Peggy is in search of a new roommate; and a rich new client is excited to be doing business with the firm.

In the third-season opener, Salvatore and Don take a business trip out of town. Pete Campbell and Ken Cosgrove worry about the changes at Sterling-Cooper and how the changes will…

While Chuck and Sarah go on to rescue Steve they realize they have a chemistry together. Meanwhile Morgan becomes a pariah at the Buy More after mistakenly getting Emmett promoted.

Ellie’s big day finally arrives and Chuck must save her life and her wedding from being ruined by Ted Roark and FULCRUM.

Chuck, Sarah and Casey learn about a man called “Perseus” who is behind Fulcrum’s plans to build their own Intersect. While Sarah and Casey are sent to find Perseus, Chuck…

Chuck is contacted by the one person that can erase the Intersect from his mind. He starts having trust issues and doesn’t know who to lean for help. Meanwhile, Buy…

A female agent is sent to evaluate Sarah’s performance, when Chuck’s feelings for her are revealed. Meanwhile, Morgan, Jeff and Lester are trying to get invited to Captain Awesome’s bachelor…

Chuck’s life seems to be coming together, his long-absent father has returned and he landed his dream job. Unfortunately for Chuck, neither turns out to be quite what he expected.

After Chuck’s father Steve is kidnapped by Fulcrum, Chuck learns the only chance he has to find him is by putting his trust and life into the hands of the…

A new mission has Chuck and Sarah posing as a married couple and interacting with some odd neighbors. The Buy More crew help Big Mike out after his wife files…

While helping a depressed Morgan spy on Anna, Chuck flashes on her boyfriend; Jeff and Lester beg Ellie to hire them to play at her wedding.

Chuck gets jealous when Sarah has to seduce a Fulcrum agent. Meanwhile, Jeff and Lester start looking for the “Buy More Babe” as a way of finding a new employee.

Chuck foils a plan to kill Tyler Martin, an international rock star. Chuck’s night out with Tyler leads to trouble. Morgan holds a contest among his fellow employees.

Jenny wants to be the Queen Bee of not only Constance but of all the Upper East Side, as she lands the hottest escort for the Cotillion. Meanwhile Dan and…

Hoping to impress the elitist theater kids at NYU, Blair sets her sights on landing a private concert with the hottest musical performer of the year, Lady Gaga. Dan and…

It wouldn’t be Thanksgiving on the Upper East Side if there wasn’t a serving or two of some major drama for the holiday. Blair suspects her mom has been keeping…

On the anniversary of Bart Bass’ death, Chuck wrestles with an issue from the past and a serious car accident rocks the Upper East Side. Dan and Vanessa attempt to…

Olivia says something she regrets during her appearance on Jimmy Fallon’s talkshow and tries to keep Dan from finding out. With election day around the corner, Nate suspects his grandfather…