Iron Man 3 is currently screening around the world to various lucky audience members, some of whom feel no shame in spoiling the movie for others. If you wish for the requisite end credit cookie sequence to remain a mystery until that moment when you are seated in the theater, then stop reading now.
Major Spoilers lay ahead!
Those of you who want to know if it's worth sitting through seven minutes of credits can continue reading. Just don't be upset when you learn the truth, and don't be an "Orange" and spoil it for others.
Numerous sources have confirmed that the Marvel post-credit sequence in Iron Man 3 is one you'll want to stay seated for, as it brings back one of Marvel's The Avengers fan-favorite relationships, that between Tony Stark and Bruce Banner. Yes, Mark Ruffalo does have a cameo in the film.
Here is a description of the scene in question.
"It starts with a close shot of Tony Stark (Robert Downey Jr.) on a couch talking about his various traumas, obviously he's talking to someone, as if he was seeing a shrink, the tone of the scene is light and supposedly funny. Then we discover that the person he's talking to is Bruce Banner/Mark Ruffalo, who fell asleep because of Tony's boring story. Tony remarks that Banner has been sleeping during the most exciting part of his story and yells at him, and Banner just mumbles and says "You know, I'm not that kind of doctor!" Then Tony recalls another memory and resumes his monologue, and then we see Banner starting to fall asleep again."
This news may disappoint some of you, as it has long been rumored that the Guardians of the Galaxy would show up in the credit cookie. Here's the thing, though. Its believed that, like Marvel's The Avengers, there will be two post-credit scenes, and because of spoilers like this one, Marvel is saving the Guardians of the Galaxy reveal for fans in theaters, not critics weeks in advance. Director James Gunn is currently in England, and its believed that he is still shooting the Guardians of the Galaxy scene for Iron Man 3. How else will they get everyone in at Midnight on May 2nd?