Here's a review from gametrailers on Mass Effect. Hope it helps, AddleBoy.
http://www.gametrailers.com/player/28091.html
WolfBlack, not sure if you were using the play on words there but just in case, the "Mass" in Mass Effect refers to "Size" or "Weight" and not to "Massive". It's explained in the game why it's called Mass Effect.
Anyway, it'd be cool if people you saved or killed were either in the next games or gone. For instance, if you killed someone in first game, maybe a family member could be looking for you to get revenge. Small details like that would make it more enjoyable, at least to me.