Because Pixar are the kings of self-reference, Inside Out included a number of Easter Eggs relating back to past releases, including Finding Nemo, Toy Story and Ratatouille. One of the best came during the sequence set in Dream Productions, where the background reveals an obscure nod back to Monsters, Inc. If you look closely at the wide corridor shot, you'll spot a pair of gigantic legs that loo suspiciously like those of Ted, the giant monster whose legs appear on Sully and Mike's journey into work. It's a particularly satisfying nod to Pete Docter's wider body of Pixar work.