BioWare has released a new teaser trailer for Mass Effect 2, their upcoming action-RPG. In it, you see developers and designers talking about the game, including some cool info indicating that if you made some choices in the first the killed NPCs off, those guys won't be returning in Mass Effect 2.
The second in a planned trilogy, Mass Effect 2 is slated to hit PC and Xbox 360 in early 2010. A playable demo of the game will be shown at E3, which runs from June 2-4.