Walt Disney Studio artists were famous for hiding inside jokes or placing caricatures of each other in their cartoons or animated films. Pixar's animators, having some of their own fun, created their own tradition by hiding references to upcoming films in previous releases.
In Toy Story 3 (2010) one of the Sunnyside preschoolers wore a Lightning McQueen t-shirt, paying homage to the upcoming Cars 2 (2011). Prior to that, Disney·Pixar's UP (2009) featured a pink Lots-O'-Huggin' Bear from Toy Story 3, which appeared in a little girl's room with the Pixar ball - both visible as Carl & Ellie's house flew through the city.
As Disney·Pixar's thirteenth animated feature premieres in theaters on June 22, 2012, here's a flashback to BRAVE's first Easter Egg, a hidden cameo in 2011's Cars 2.
With the World Grand Prix shifting to Great Britain, the villains attempt to destroy Lightning McQueen and any support for alternative fuels. With Mater & Lightning flying through London's streets, Holley clears a path by pushing Dr. Z's henchmen, Acer and Grem, into the Left Turn Inn.
As the villainous pair crash into the Left Turn Inn, they end up spilling dozens of pints on the pub's patrons. As soon as the oil spill clears, clearly visible is a Scottish tapestry featuring the fearless highland family from BRAVE as cars.
Here are two of the Easter Eggs from Disney·Pixar's Brave. Both the Pizza Planet Truck and Sulley from Monsters University appear as wood carvings in the witch's work shop.