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When Dave decides to disconnect the Johnson home from the grid, he inadvertently causes a community-wide power outage; in the wake of Marty's engagement, Tina struggles with no longer being the primary woman in her son's life.

When Calvin hires Grover to work part-time at his business, he soon realizes the preteen is not a good fit; Marty and Necie reconsider their living situation.

Darlene struggles to cope with the stress of construction; Lou returns as Mark's combative contrabassoon teacher.

Ben and Darlene are excited to share their good news with the family, but Neville, Jackie, Aldo and Harris share some very similar news of their own.

Kramer spots Jerry's stolen car in Ohio; Elaine gives Peterman JFK's golf clubs; George is institutionalized.

Jerry dates a woman with few inhibitions about her body; George awaits an apology; Kramer researches short showers.

Geoff struggles to keep his living arrangement with Erica and Barry a secret from Beverly during game night; Adam goes to his guidance teacher for a lesson in being cool so he can get closer to a new girl in chemistry class.

When Murray goes out of town, Jane Bales attempts to make a power grab at the Ottoman Empire, forcing Beverly to retaliate; Adam is thrilled to learn that Dave Kim also plans to attend NYU.

As Abishola begins studying for medical school, she offends Gloria with an insensitive comment about Gloria's own journey of almost becoming a doctor; Tunde schools a reluctant Bob on the art of home repair while helping to fix his dishwasher.

When Ebun attempts to establish herself as matriarch, Olu worries she's losing her place in the family; Bob and Abishola are forced to choose sides; Tunde is appointed interim deacon at church.

Sheldon is thrilled to help Bernadette and Wolowitz navigate bureaucratic paperwork, until he discovers they are breaking the law; Leonard is disappointed when his friends exclude him from a scientific project.

Sheldon is required to attend Sunday school, but when he returns he decides to learn all he can about a multitude of religions.

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Stay informed with the latest breaking news and headlines.

Sheldon is thrilled to help Bernadette and Wolowitz navigate bureaucratic paperwork, until he discovers they are breaking the law; Leonard is disappointed when his friends exclude him from a scientific project.

While Leonard prepares for a three-month science expedition, he and Penny re-evaluate their feelings for each other.

Sheldon is required to attend Sunday school, but when he returns he decides to learn all he can about a multitude of religions.

Sheldon battles President Hagemeyer's mysterious boss over the university's science requirements; Mary discovers that Georgie is working at Meemaw's illegal gambling room.

From War Memorial Stadium in Laramie, Wyo.

Haley's astrophysicist boyfriend comes to meet the family, setting Claire and Phil off in a competition about which one of them is smarter; Mitch and Cam go on a yoga retreat.