For many fans, including myself, one of the best moments in the first Iron Man film was the post credit scene wherein Nick Fury made a surprise appearance, the first hint towards The Avengers and an overarching Marvel Universe.

This trend was continued with a surprise appearance by Robert Downey Jr. as Tony Stark in The Incredible Hulk.

With 3 more major Marvel films still to come, it stands to reason that Iron Man 2 will continue the trend, yes?

Apparently, according to Italian film website BadTaste.it, the trend continues.

SPOILERS FOLLOW FROM HERE (vague ones, but still, don’t read if you don’t want to know)

According to an english translation of BadTaste’s scoop, here’s the deal with the Iron Man 2 post-credits easter egg…

A 100% trusted source (NOT from the production/distribution, but very familiar with the movie) confirmed us today that there will be an easter egg in IM2. It’s an extra scene, just like the one in the first movie, after the end credits. We are able to tell you what’s about! It’s a scene about… Captain America and Thor! Maybe this doesn’t seem a big reveal, but it’s nice to have a confirmation.
You've heard it here, so remember - when you see Iron Man 2...STAY AFTER THOSE CREDITS!

Source: Iron Man 2 Easter Egg Scene Revealed? | /Film.