14 Movie and TV Easter Eggs That Point to a Shared Universe

Easter eggs often unlock bits and pieces of a film or TV show's universe — character connections, sets or costumes with deeper design details, etc. But sometimes these Easter eggs point to an entirely different world entirely; a world that you might know and love. Much like the Marvel Cinematic Universe built its characters up into a world, movies as varied as Up! or Teenage Mutant Ninja Turtles can expand their worlds and stories into a multiverse of connected fun. Or that’s reaching, and these are weird little asides movie makers throw in because anybody's job can get boring if they do it long enough.
Here are some Easter eggs that point to a wider expanded cinematic ultra-verse full of every crossover ever imagined. Or just the director being bored. Half a dozen of the other. Maybe she just wants to make her fanfics real. What’s a better reason to make media?
Watchmen

Source: YouTube
Stan and Rick

Kang the Conqueror

Source: The Illuminerdi
Castiel and Constantine

More: 6 Mind-Blowing Easter Eggs Hidden in Famous Movie Costumes
That’s So Raven

Source: Disney Wiki
He's everywhere


He Came From a Galaxy Far, Far Away

St. Elsewhere and Cheers

Abed in Cougar Town

Source: Scene on YouTube
Busting Casper

More: The Horrifying Reality Of 'Casper's Forgotten 'Ghostbusters' Cameo
Batman and Superman

Source: Screen Rant
Alien Skull

More: Let's Try To Make Sense Of The 'Alien' Franchise's Continuity

Source: IGN