What The Thor Movie's Ending Teaser Trailer Means.

I've seen people discussing how they were confused by Thor's teaser trailer on the internet, so I thought I would spend a little time discussing it. Clearly, we have spoilers.

• Alright, at the end that strange thing in the suitcase Nick Fury reveals is a Cosmic Cube, a source of unlimited energy, hence all the talk of energy.
• Loki seems to have taken control of the doctor or at least piggy-backed onto him, it isn't quite clear which.
• This both shows that the Cosmic Cube--which will play a part in Captain America--is in the hands of Nick Fury by the time of the upcoming Avengers movie, and that this Cosmic Cube will possibly play a role in said Avengers movie, with Loki also appearing.

I hope that helped clear some things up!