#29: Arthur Christmas
More so than other types of films, animation production companies tend to put Easter eggs on previous works all throughout their movies. And it has somewhat become a tradition to search for them as you watch their new films.

Well, Aardman Animations, famous for their stop-motion clay films seamlessly included an Easter egg in Arthur Christmas from one of their previous films. Remember when Steve sneakily walks into Gwen’s house and he almost steps on a toy sheep? Yeah, that’s Shaun the sheep.