TV Guide for Now Tuesday 5 in TLC

Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party.

It's a dream come true for Sheldon when he has a close encounter with his hero, Mr. Spock -legendary sci-fi icon Leonard Nimoy.

When Wolowitz gets to work with world-renowned scientist, Stephen Hawking, Sheldon is willing to do anything to meet his hero.

Howard's wedding plans are in jeopardy after the guys throw him a bachelor party, and details of his sexual history are leaked online.

When NASA reschedules Howard's mission and puts his wedding plans in jeopardy, he's forced to face his fears - and Bernadette's dad.

When Howard and Bernadette decide they want to be married before his NASA space launch, the gang rushes to put on a wedding.

Howard discovers that he can't escape his mother - even in space! Back on earth, meanwhile, Raj turns his existence as a third wheel into an art form.

After learning Penny is thinking about breaking up with Leonard, Sheldon tries to intervene. Howard is being picked on in space by the astronauts.

Kody's apology to Christine starts well but gets tense when David brings up Kody's relationships with his kids. Janelle seeks guidance from Meri.

Kody's apology to Meri gets tense, as she doubts his sincerity, challenging his comments. Janelle asks her church for a spiritual release from Kody.

Lee Nose Best! Tony has large growths on his nose that impair his breathing. Can Dr. Lee help? And, Marie has an unsightly lump on her forehead that makes her a hermit.

Cystem Shutdown! Gerard has nearly a hundred lumps varying in size all over his body. Eric has a large bump on his head that he calls his 'on/off button.

Traci's confidence was destroyed after years of bullying about the bumps that have plagued her face for 20 years. Ravon has a unique dangling growth on his leg.

At 600lbs, Ashley had to move home so her mum could help her care for both herself and her newborn daughter. Can she overcome her unhealthy eating habits.