The Ring closes in on Chuck and the members of Operation Bartowski. Casey must secretly protect his daughter from the Ring. Big Mike receives news about the Buy More.

The Ring is closing in on Chuck and Operation Bartowski.

After Charlie’s license is suspended, Jake becomes his driver. Alan plans to go to Chelsea’s birthday party.

While Penny worries that dating Leonard has ruined her for normal guys, Wolowitz and Koothrappali search for Sheldon’s perfect match online.

Marshall and Lily make a secret pact to start trying to have a baby if they ever finally see Barney’s doppelganger. Meanwhile, Robin finally gets an offer for her dream job.

Liz questions fate when she meets the man of her dreams.

Leonard tells Penny about how he met Sheldon for the first time

When Ted takes a date to see a new hit movie, “The Wedding Bride”

Chuck asks Morgan to help him on a side mission.

Peter, Quagmire and Joe go on a journey to find the source of all the world’s dirty jokes

The “Star Wars” saga, “Family Guy”-style

Quagmire can accept his dad’s lifestyle choices

Jack becomes even more entangled in his love triangle between Avery Jessup and Nancy Donovan

Ted, Marshall, Lily and Barney crash a highfalutin party at a swanky New York apartment

Chuck to meet with a CIA psychiatrist Dr. Leo Dreyfus.

Leonard and Sheldon compete for the attention of a famous female physicist.

Liz Lemon meets her mother’s old flame.

When Leonard and Penny aren’t speaking, Sheldon goes to extremes to keep them both happy.

Ted and Barney jeopardize Robin’s new relationship

Sarah and Chuck train under Laura and Craig Turner

Brian and Stewie are up locked inside a safe for an entire episode.

The residents of Quahog are sent into a frenzy.

Brian pitches his pilot script to network executives

Jenna’s new boyfriend, Paul, raises Liz and Pete’s suspicions.

Jack must choose between janitors and the shift time they both want, and Kenneth aids Tracy Jordan in being a good husband.

Liz Lemon starts making an effort to date by attending singles events with Jenna Maroney

Ted attends his mother’s wedding.

A fight between Leonard and Penny threatens their relationship, while Sheldon battles Wil Wheaton in bowling.

When Marshall gets mugged, Lily decides she wants to get a gun for protection.

While in Europe, Sarah and Chuck realize they’re traveling on a train with Spanish spies.