Leslie meddles in Ron's love life; Ann and Chris team up to fight diabetes.

As part of a GE environmental initiative, Jack creates a green mascot for the network. Meanwhile, Kenneth plans his annual house party.

Jack decides to help Liz hang onto Carol and clashes with Avery over redecorating his apartment; Tracy finds it tough to cope without Kenneth; Jenna becomes a TGS producer.

Jack demands changes to make TGS more relatable to average Americans, sending Liz and Pete to search for a new cast member. Kenneth organises a strike by the pages after NBC cuts overtime, prompting Jack to send Lenny Wosniak undercover.

Jack begins to bond with Milton and searches for a way to help him get the kidney he needs; people start seeking Liz out as a relationship expert.

Liz comes face to face with her perfect man; Jack's love triangle reaches its limit; Kenneth attempts to side step a promotion that would send him to LA.

As Jack takes stock of his life, Liz struggles with her new role as a stay-at-home mother.

A fly-on-the-wall look at the marathon cast album recording of an ill-fated 1970 Broadway musical comedy centred around a cast of characters who work, live, or want to live in the same co-op.

Danny is forced to take Morgan on a road trip to California, and they make a surprise stop.

Part one of the documentary chronicling the rise and fall of the band, the Blue Jean Committee.

Jack gives his students a brand-new revenge mission; Principal Durbin's secretary wants Jack to make something for the bake sale.

Miles' publisher sends Jack an offer to write a book about feel-good philosophy; Durbin tells everyone who Mary chose for her emergency contact.

Jack finds himself attracted to a student's mother; Parents complain to Durbin about student art from Mary's class.

Jack sees an opportunity for a revenge mission on behalf of the kids; the other teachers think they've found an otherworldly presence.

A student gets hurt when Jack leaves his class unattended. The students get excited about a substitute teacher.

Part two of the documentary chronicling the rise and fall of the band, the Blue Jean Committee.

A former Batman star offers an invaluable geography lesson, while Tijuana Jackson gives a distressed woman some unsolicited advice in a liquor store.

Jack tries to give Durbin marriage advice, but it backfires, causing him to move in with Jack; the kids try to help Jack get revenge.

A student reports Jack when he cancels a pig dissection and he tries to find the snitch; Durbin wants to win Principal of the Year.

A sought-after waitress appears in the movie of the week, while a woman turns out to be a formidable referee.