Replaceable You/References

Cultural references

 * The episode title is probably a pun on "You irreplaceable you", a lyric from the song "" by and.
 * The Robopets are a parody of the which has been in production since 2003.
 * The Itchy & Scratchy cartoon shown at the beginning of the episode is a parody of .
 * Santa's Little Helper wears a Darth Vader mask, causing Homer to bow down to him and call him "Lord Vader".
 * Bender from  appears on the cover of an issue of Popular Robotics, as seen on Bart's desk.
 * On Ralph's table, a is seen.
 * The "Sit in there, baby" poster is a parody of the infamous "" posters.
 * from Toy Story and  is seen on Bart's desk.
 * Paul Flart: Water Park Cop is a reference to the 2009 film .
 * The Six Million Dollar Man is a reference to the.
 * As the robopets are roaming through town, they stop to watch TVs, with The Jetsons playing on it. On it, Rosie the Robot Maid and George Jetson are on the TV.

Trivia

 * Mrs. Glick dies in this episode. Her first name is revealed to be Alice.
 * The chalkboard gag is a reference to the fact that the Treehouse of Horror episodes usually air sometime in early November.
 * Moe pours Horse Laxative into Lenny's beer.
 * Gumball dispensers in Springfield Retirement Castle offer Lipitor, Propecia, and Viagra.

Continuity

 * Roz has some Humble Figurines on her desk. ("Home Away from Homer")
 * Kearney's science project is a human skull with the title "Is This Uter?", referencing Uter's disappearance in "The PTA Disbands".

Goofs

 * In the scene where Homer shows Roz the coffee room at first, his tie is pink colored, but in the next scene, it's green and blue, but it's pink again in the next scene.