Samus is now far more interesting of a character to me because of Other M, so shame on ya'll for trying to ruin it for the rest of us. I'm having a great time with this game, and so far (haven't beaten it), Samus hasn't acted any different than what I would have expected of her - now we have the added benefit of getting some thoughts and emotions behind the gun. I say, welcome chang, and now I want more of it. Hopefully sales speak louder than GAF.
edit:
And to the people saying the character of Samus, you could always tell what her thoughts/emtions were based on her reactions of shock/fear/awe/whatever - uh, what games were you playing? The first game, she doesn't even take her helmet off. The Prime games are first person and aside from some fancy reflective lighting, you barely can see her eyes in that whole game. Perhaps some of the other earlier sprite based games that you wear a helmet? Or are we basing this entirely on ZZS from Smash Bros, perhaps her most animated facial role? C'mon, gimmie a break. She isn't Link. Anything you want to say about her motivations or feelings, you came up with on your own. Other M doens't make her who you created her to be? Oh well