In referring to 'Weird Al' Yankovic's parodies, Tracy says, "That's what he does! That's all he does! You can't stop him!" This line is a direct quote from The Terminator (1984).
Though legally 'Weird Al' Yankovic doesn't need to get permission to parody a song, he always asks the artist for permission. This is ignored for the Jenna subplot.
When Jack is disgusted by the scotch on the movie set, Liz clarifies that it's iced tea. Iced tea is what Alec Baldwin is really drinking when his character drinks scotch on "30 Rock".
The actor hired to play Jack Donaghy in "Kidnapped By Danger" is played by William Baldwin, Alec Baldwin's real-life brother.
When Lance Drake Mandrell (William Baldwin) first meets Diana Jessup (Mary Steenburgen) he says "Diana, are you a time-traveler? Because I don't know how my mother-in-law could be younger than my wife." This is a reference to Back to the Future Part III (1990), where Steenburgen's character, Clara Clayton, travels through time.