TV Guide for Now Saturday 11 in TLC

Sheldon tests an MIT invention, Leonard has trouble when Penny announces her brother's visit, and Raj seeks advice from old girlfriends.

Leonard and Howard engineer a distraction for Sheldon to keep him from hindering progress on the guidance-system project.

Amy is incensed when she learns Sheldon has shared intimate relationship information, and Raj's father stops sending financial support.

Raj finds himself in a cash crunch and turns to Sheldon to help him. Meanwhile, Penny considers crashing the guys' annual Comic-Con getaway.

Leonard and Penny offer Sheldon's old room to Raj after he moves out of his apartment.

Raj moves in with Leonard and Penny, and a period of adjustment begins, while usually self-centred Sheldon shows surprising interest in Amy's work.

Sheldon is pushing himself with too many collaborations. Bernadette's maternity leave is running out, and she must face going back to work.

Leaving the baby in daycare proves to be tough for Bernadette, and geologist Bert digs up a girlfriend, but some colleagues think she's a gold digger.

Leonard isn't thrilled when Penny considers taking a new job offered by her ex-boyfriend, Zack.

Leonard, Sheldon and Wolowitz celebrate the completion of their top-secret military project, until an unpleasant surprise leaves their heads spinning.

Sheldon's former admirer, Dr. Ramona Nowitzki, turns up while Amy is visiting Princeton, and the gang is extremely concerned.

Sheldon's comic book store experience changes when Neil Gaiman puts Stuart's store on the map. And Raj takes credit for Penny's astronomical discovery.

Sheldon goes to Vegas to win money for science. Penny and Bernadette take Amy wedding dress shopping, but her choice entangles them in a web of lies.

Best friends and comedians Roisin Conaty and Sara Pascoe are visiting locations with the most hilarious, baffling and terribly bad reviews.

When a group of mercenaries steal a hi-tech weapon that poses a global threat, Xander Cage leads a team of adrenaline junkies on a recovery mission.

Gerald returns to see Dr. Lee and a hand specialist about a huge, intrusive bump on his finger. Vinnie has an embarrassing birthmark on his neck.

Debra has a large, brainlike growth on the side of her head that feels like a sponge, has crevices and emits an odour. Cowboy Dusten has painful lump on his knee.

Brandon is a talented musician and singer but his addiction to food has left him incapacitated, and he risks losing his girlfriend and his career dreams.