Head writer Liz Lemon finds herself defending her live TV show when brash new network executive Jack Donaghy (Alec Baldwin) starts meddling.

One erratic star (Tracy Morgan), one neurotic star (Jane Krakowski), and a meddlesome boss (Alec Baldwin) create panic in the writers room.

Jack plays matchmaker, setting Liz up on a blind date.

Liz keeps aspiring writer Jack from taking over the writers room and Kenneth the Page tries desperately to impress Tracy.

Jack (Alec Baldwin) aspires to act and Tracy (Tracy Morgan) reveals a painful secret.

Liz Lemon goes back to her ex-boyfriend Dennis, (guest star Dean Winters) simply because she's bored.

Two stars arguing over a coveted appearance on "Late Night with Conan O'Brien" (guest star Conan O'Brien) push Liz Lemon to the edge.

Liz finally calls it quits with Dennis (guest star Dean Winters) while personal politics pit Toofer against Tracy.

Liz (Tina Fey) and Jack (Alec Baldwin) both battle maternal woes. Chris Parnell guest stars.

Jenna awaits the opening of her long-anticipated movie while Tracy digs out of debt.

Liz falls for an attractive guy and Jack walks in Kenneth's shoes.

Tracy tempts Pete while Liz gets a glimpse into Jack's past.

Valentine's Day goes awry for TGS cast. After the entire cast binges on some questionable seafood at the craft services table, they hunker down to pull an all nighter -- on Valentine's Day -- and cobble a new show together.

Liz works overtime to prove to her writers that she's a good boss in "30 Rock".

Jack negotiates Josh's contract while Kenneth the Page earns a spot in Tracy's entourage.

Jack forces Tracy to attend The Source Awards, while Kenneth the Page catches the eye of a hip-hop star's girlfriend -- with special guest stars LL Cool J, Wayne Brady and Ghostface Killah.

Jack welcomes his brother Eddie (Special Guest Star Nathan Lane) into the 'TGS' family.

Jack (Alec Baldwin) turns to Kenneth (Jack McBrayer) for help when an aggressive West Coast NBC exec (Special Guest Star Will Arnett) declares he's after Donaghy's job.

Liz finds love while Jack fights to keep his job.

Liz (Tina Fey) mulls a Midwest move while Jack (Alec Baldwin) plans to wed.

With the end of 'TGS' season near, Liz and the cast face decisions that rock the show in the season finale; Emmy Winners Sean Hayes, Elaine Stritch and Chris Parnell Guest Star.