A Goon's Deed in a Weary World - S7-E11
Trivia: Kenneth and Jack compare giving a tour of the station to Willy Wonka. Later as Kenneth and track are actually giving the tour we see the guests, which all match characters from Charlie and the Chocolate Factory. One is overweight and has a German accent like Augustus Gloop, one woman is wearing a red dress reminiscent of Veruca Salt, one is wearing a bolo tie like Mike TeeVee, one is very similar to Violet Beauregard. And finally one is seemingly pure of heart and clean cut like Charlie Bucket.
Trivia: Bryan Cranston, whose biggest role is arguably Walter White from Breaking Bad, makes an appearance in this episode. Matthew Broderick also makes an appearance in this episode, who was the studio's first choice to play Walter White.
The Beginning of the End - S7-E1
Trivia: Jack mentions that Jonathan was able to come back to 30 Rock because "the grass was not greener on the other side." This was a subtle shot at the show Weeds. The actor playing Jonathan (Maulik Pancholy) was on that show, which was about selling marijuana (grass). When Weeds was canceled, Pancholy came back to resume his role on 30 Rock.
Trivia: Jack's "girlfriend" of sorts introduces Jack (Alec Baldwin) to her other boyfriend, named Ryan. When she is making their introduction to each other, she says "Jack, Ryan." Alec Baldwin played Jack Ryan in The Hunt For Red October.
Answer: There's probably lots of reasons why Liz stays - money, lack of other job prospects and so on. The reality is, if she left, that would adversely affect the story line and the comedy within it. Tina Fey was one of the stars, and her character is an integral part of the show.
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