A big spoiler has leaked about the upcoming "Iron Man 2" movie, and it's not the totally boring reveal that Olivia Munn's much-discussed mystery role is going to be... a random reporter. Or that Mickey Rourke apparently had no idea what was going on in the movie.

Rather, the after-credits sequence from the movie made its way to Youtube recently, and while it was pretty instantly pulled down, some details have emerged. Much like the scene with Samuel L. Fury from the first "Iron Man" flick, there's a pretty big surprise/tease in store.

SPOILERS lie after the jump, so if you don't want to know, don't go.

Here's a breakdown of the scene, as described at io9:

We see a desert landscape, with sandy dunes punctuated by the occasional bit of scrub. There are mountains off in the distance. A black car zooms across the screen, dust and exhaust in its wake. The car swerves and roars towards the camera, and we see its New Mexico license plate: 8RE 2Z1. A man steps out of the car, and then we see him standing on top of a tall hill with a single tree, looking down at something.

The man is revealed to be SHIELD agent Coulson, wearing dark glasses and a dark suit.

He's looking down at a smoking crater, which is being circled by a bunch of cars, as feverish activity takes place around it. He turns away from the crater, and touches his earpiece. "Sir," he says, "We've found it." The camera pans back to show what's in the crater - Thor's hammer, looking much like it does in the comics.

Smash to black.

Obviously, the scene is teasing the upcoming "Thor" movie, and sounds like it does a pretty effective job of it. Here's a screencap of Mjolnir from an Italian site -- low quality, but it's all we've got: