YES!
I just beat it on my friend's xbox. This game is AWESOME! Alright, the gameplay needs some more differenter stuff in it, cuz most of the side missions are the same thing over and over, but the story and characters rock! And the graphics kick ass too. In terms of story and atmosphere, I think this is probably the best sci-fi game I've ever played, maybe barring Star Control II.
Yeah, I beat Mass Effect awhile ago, it was a pretty damn good game. I think it takes awhile to build up interest though (atleast for me it did).
Yep, this is probably one of my top xbox games... considering that I only have two, it's not too hard. Still through, killer game, love it.
Mass Effect is crazy fun. There needs to be more games that you can do basically anything you want to the extent of Mass Effect.