Advertisers have been stealthily sneaking inside jokes and homages into their movies, TV shows, and posters for fans to find for decades. Go stare at the posters hanging in the lobby of your nearest local movie theater for a few hours. Compete with your friends to see who finds the most Easter eggs in the posters. Free popcorn for whoever comes out on top! The theater staff probably won’t mind right? Or just read this article. Whichever works better for you.