In the Blu-Ray features, there's one of Jon Favreau explaining some easter eggs for the Avenger Initiative during an ending scene with Robert Downey Jr aka Tony Stark and Samuel L. Jackson aka Nick Fury.
"Yeah, that's from "The Incredible Hulk" (news report on S.H.I.E.L.D monitor), which means it took place before "TIH". If you look you see the the crater on the other monitor, that's the "Thor" thing. That's where the hammer was recovered. This is just a geek heaven here.
And if you think that anything on this monitors is not something we (in Marvel) didn't talk about for hours - you are crazy! And if you look on that one, see there is a map up there, so... if you look at those maps, each one of those locations corresponds to something in the Marvel Universe. I'm not supposed to say that.
And if you look on each one, and I know what they mean, but I'm not gonna say it, but I'm gonna say this: Two of them relate to "The First Avenger: Captain America", One of them relates to "Thor", and the one in Africa relates to Black Panther."
In that scene there's some screens where you can notice references to Captain America, Thor, Hulk and Black Panther too.
Blu-Ray and DVD's come out on september 28... will you figure out what are references I was talking about?
If you want to read the first impression of the Blu-Ray edition of Iron Man2: