Maybe it’s all the hype around Avengers: Age of Ultron, opening on May 1, or maybe it’s the holiday we just celebrated last weekend, but we’ve had Easter eggs on the brain at ScreenCrush lately. And of all the Easter eggs in all forms of media, our favorites are the ones in Marvel movies; the callbacks to earlier films, brief teases of future adventures, and references to as-yet unseen characters or concepts from the original Marvel comic books.
