The Loop (TV)
- The Hollywood stars seen departing the train are Jimmy Durante, Shirley Temple, W.C. Fields, James Cagney, Laurel and Hardy, and Boris Karloff as Frankenstein's Monster.
- The license plate Marge takes a photo of is "MABF02", which is the production code for the episode.
- Marshall Goldman's laptop is a Mapple computer, a company which has been seen before in a few other episodes.
- The song in the background of Abe's flashback is "Chattanooga Choo-choo" by Glenn Miller.
- Abe is almost surprised after he understands of being created by Jim Henson.
- This is the second episode where a Simpson makes an improvised zip line. The first was A Streetcar Named Marge.
- This is the second episode where someone takes interest in Abe's history. The first was Raging Abe Simpson and His Grumbling Grandson in "The Curse of the Flying Hellfish".
- This is the second episode where a Simpson cares about a lamb. The first was Lisa the Vegetarian.
- In Homer's first ramble, he says that he created Gracie Films.
- This is the first episode to air in 2010, meaning the first episode in the 2010s.
- In the scene where Carl and Lenny lowered Homer onto the train, Lenny is shown without his five-o-clock shadow.
- After Larry the Lamb is ripped in half, Larry the Lamb is seen unharmed near the end of the episode. Someone could have fixed him.
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