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Ryan winds up impressing Mike; after Mandy fails history and her laptop and cell phone are taken away, she starts using Mike's old ham radio.

Sheldon and Missy both run away from home together; Mary gets some upsetting news about her husband, George.

Sheldon is determined to convince Amy they should procreate; Koothrappali is reluctant to tell the gang what the new woman he's dating does for a living.

Sheldon's comic book store experience changes when writer Neil Gaiman puts Stuart's store on the map; friendships are threatened when Koothrappali takes credit for Penny's astronomical discovery.

A former sports announcer, an emergency room doctor and a mystical fairy decked out in pink are among 100 contestants competing for a chance to win up to $100,000.

Models compete with "Star Wars" nerds.

Stay informed with the breaking news and headlines.

The Emmy-winning quiz show features a unique answer-and-question format.

Sheldon and Dr. Sturgis have their first fight when Dr. Sturgis marks an answer wrong on Sheldon's test; Mary takes over for Pastor Jeff when he's out sick.

After Mandy is accepted by two colleges, Kristin decides to re-evaluate her life; during a date with Ryan, Kristin runs into Jon (Jonathan Taylor Thomas), a former co-worker from the diner, who now owns a hip restaurant.

Darlene falls in love with a house she's looking at; when the realtor shares she has a better chance of getting the house if she's part of a couple, she convinces Ben to pretend to be her partner.

The family is locked down at home due to a shooting incident in the neighborhood.