Originally Posted by Rage
It was at the world's fair. When they first flash inside (just before we see Stark) there is a tube in the foreground that has John Hammond in it, in his red and yellow costume.
Thanks, I'll have to keep an eye out.
I don't know if this counts as an easter egg, but there is totally a part in Cap where you can hear the Wilhelm Scream. I think it's when one of the Hydra dudes falls off his motorbike. XD