From the Forthcoming AVENGERS Blu-Ray (Spoiler Alert)

Gag reel and Loki/Barton deleted scene. I think deleting it was a good idea -- as Anne says, it's too talky -- but I'm really glad it exists, as it answers a couple of questions in the film and adds just a touch of background. Not good for movie pacing, but excellent for back story.

ETA: And the gag reel has been pulled. Sigh.