You probably knew there would be nods to the Avengers in Captain America: The First Avenger, but did you expect a brief appearance by the Human Torch? The original version?
Eagle-eyed fan Doc Hermes spotted the above frame in the World's Fair sequence at the start of the film — it's the original, android version of the Human Torch, "still in the wrapper." The Human Torch is the creation of Professor Phineas Horton, who kept him in a glass case — until one day, he was exposed to air and caught fire as a result. This easter egg is probably just a cool shoutout to the fact that Chris Evans played the Human Torch in two Fantastic Four movies — but who knows? Maybe the android Torch will get to flame out in the Captain America sequel?