This is a glimpse of what was shown behind closed doors at E3 for Mass Effect 2. There are spoilers towards the beginning and end of this video, but there is also quite a bit of new and interesting info about combat, powers, and space exploration.
If you do watch this video, understand what was shown at E3 was the "ending" in full. So no one can have this more spoiled than me. :( It was a visually stunning and breath holding scene though.