With the DVD/Blu-ray release of The Avengers coming ever so close on September 25, Marvel has officially released the film's alternate opening, which will be included on the home releases along with other deleted material.
In the scene, we jump to after the events of the film where Cobie Smulders' S.H.I.E.L.D. Agent Maria Hill is in a debriefing with her superiors over the Earth-shattering invasion by angry aliens; the culmination of a series of events started by Nick Fury's attempt to harness the power of the glowing cosmic relic, the Tesseract.
It would have been an interesting way to begin the film, essentially foreshadowing the level of carnage that would be ahead. However, it's a bit too slow in tone to start a mega-movie like The Avengers.
Fascinating stuff, nonetheless.