Trivia: Toward the end of the film, the toys are on a conveyor belt heading for the furnace and Lotso jumps off. At the moment when he grabs the wall rungs, the musical score for the next few seconds is taken from Monsters, Inc. when Sully and Mike are running through the hallways looking for Boo. Also when Andy is giving his toys to Bonnie and leaves it is plays the musical score from Monsters, Inc. when Sully and Mike had to say bye to Boo.
Trivia: The A113 logo that pops up in all of the Pixar films makes an appearance on the license plate on the back of Andy's mom's car. (00:18:30)
Trivia: Toy Story makes references to Star Wars episode IV, Toy Story 2 makes references to episode V, and this film makes references to episode VI. When Big Baby throws Lotso into the dumpster, this is reminiscent of when Darth Vader throws The Emperor off the platform, camera angles and everything. (01:15:00)
Trivia: The number on the train at the beginning of the film is 95, which is a reference to the year that the first PIXAR film was released (1995). (00:01:10 - 00:02:30)
Trivia: At one point in the film, Woody's voice box says the phrase "I'd like to join your posse, boys, but first I'm gonna sing a little song." This phrase has not yet been said by Woody's voice box in the final cut of any Toy Story film (until now), but it did exist as far back as Toy Story (1995) in a deleted scene where Sid tortures Buzz and Woody. (00:33:30)
Trivia: If you hear closely in the scene where Andy and the toys are watching a movie you can hear the Wilhelm scream.
Trivia: Lotso was going to be the first movie's main protagonist but the animators had a hard time animating the fur, but he still kept the same name: Lotso.