The short version of the Unix philosophy is basically, “Do one thing, and do it well”.

Michelle Rodriguez basically plays the same basic character in every movie: tough girl / tomboy who doesn’t take crap from anyone, usually wears a tank top, and dies about as often as Sean Bean.

And it’s not a bad thing.

While I haven’t seen every film she’s done, I have seen a lot of them, and she gives a stellar performance every time.

So she may play the “same character” over and over, but she does it very well.