E4 +1 Monday

Sheldon's obsession with gift-giving etiquette annoys his friends as Christmas approaches, and Leonard's new colleague dates Penny. With guest star Michael Trucco

Barry Kripke challenges the boys to a robot duel, while Howard is devastated when Penny finally tells him what she thinks of his chauvinism

Jake is excited to work a case with the best detective in the NYPD, Dave Majors - until his colleague shares his intentions to ask Amy out on a date

Holt begins to worry he is being set up for a fall by one of his superiors, and Peralta is handed the chance to work on an important case. Comedy, with Andy Samberg

Jay overhears Gloria talking about spanking and thinks she is bored in the bedroom, while Mitchell gets a great new job, so he and Cam throw a party

Hayley and family go to her new boss's country house for a wine-tasting trip, but there is a rather bizarre rule, while Gloria and Mitch are invited to a party at Oprah's house

Leslie returns as Abby choreographs a Hunger Games-themed dance. To keep the peace, however, Maddie is forced to hide a big secret

Dave is eager to take on a bigger role in the community and prove himself to Calvin, whose reaction makes it clear that their friendship needs more time

Grover gets into a fight with a bully at school, and Gemma is torn between her role as principal and wanting to protect her son. Calvin encourages Marty to stand up for himself

Jake is excited to work a case with the best detective in the NYPD, Dave Majors - until his colleague shares his intentions to ask Amy out on a date

Chef Gordon Ramsay revisits Mojito, the Junction and Bazzini to check in with the owners and find out whether his advice has been put to good use