We finally have a deleted scene that will presumably be included on the DVD and blu-ray next month. In it, we see a post transformed Bruce Banner having a brief philosophical conversation with the security guard who discovered him in the building the Hulk cratered into after plummeting from the hellicarrier moments before.
The good folks over at EW.com have the exclusive rights, so follow the link below to their page and scroll to the bottom to see the video!
http://insidemovies.ew.com/2012/08/20/avengers-deleted-scene/