Action-rpg's of all time. Great story, where your decisions affects the out come, and that will always get you back for more. What I also like is that you can save your character and load it in sequel, which really adds to the story. Preordered ME3
From the days of Baldurs gate to the star wars knights of the old republic and thier current releases of dragon age and mass effect,everything these guys have touched has been quality story telling and very enjoyable.
Thier current trend of overreaching and over simplifing the genre could hurt them a little bit,but so far I have loved everything they have put out.