TLC TV Guide

Penny and Leonard try to distract Sheldon from his career woes by reinstating Anything Can Happen Thursday, but it causes friction among the gang when Amy and Bernadette are caught lying. Meanwhile, Raj seeks Howard's help in preparing for a date with Emily. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

The gang's preparations for Star Wars Day are interrupted by the news that Professor Proton has died. Leonard and Penny attend the funeral, where they talk about their rejected marriage proposals, but Sheldon has difficulty dealing with the death of his childhood hero - until a surprise visitor helps him cope with his grief. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco, with a guest appearance by Bob Newhart

Penny gets fired from the movie, prompting her to take a serious look at her life. Raj receives advice from Sheldon after he sees Emily on a date with another man at the cinema, while Howard's mother breaks her leg. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

Sheldon becomes upset about his career, the destruction of the comic-book store and Leonard and Penny's future living arrangements. Elsewhere, Howard is unable to keep hold of a carer for his mother. Comedy, staring Johnny Galecki, Jim Parsons and Kaley Cuoco

Leonard and Amy are forced to take an unexpected road trip to Arizona to pick up Sheldon after his epic railway journey ends in chaos. Meanwhile, Howard finds Stuart's relationship with his mother strange, and Penny has an interview for a sales job at Bernadette's workplace. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

Sheldon is forced to teach a course at the university, and Howard surprises the gang when he decides to enrol on it. Meanwhile, Amy plays Penny and Bernadette off against each other while the tension brews over Penny's new job. Comedy, guest starring Regina King (Southland), with Johnny Galecki, Jim Parsons and Kaley Cuoco

Dr. Lee meets with Tobi, who has symmetrical bumps around her spine. Later, Dr. Tomassian learns how to remove a huge, floppy arm bump.

Dr. Lee is taking her practice to the next level with some exciting new additions. Plus, she shares self-shot footage of her life outside the office.

Stacey's shoulder growth prevents her from being the playful teacher she once was. Matthew worries that his mysterious shin rash may be dangerous