the video has been pulled from youtube damnit.

I'm about to tell the extra ending so if you consider it a spoiler do not read further..

Tony Stark stumbles into his lab, begins to talk to Jarvis, and is really high on himself repeating the name Iron Man. He notices someone else is in the room and he begins to speak to Stark.

It's Sam Jackson as Nick Fury, and he wants to discuss the Avenger Project.

good stuff.