SP wasn't great or ground breaking, but I enjoyed the authentic feel of the area. Other than that it was just blah.
MP... all I can say about that is I already have Bad Company 2 and don't need another.
I agree with the rest of you. This is a tired genre, and it's just getting old. I'd personally give it a 2, maybe 3 out of 5. Asking $60 for this game is just pretentious, but they know it'll sell like a mofo anyway. Too many kids with 360's out there for a game like this to fail, so be prepared for many more rehashes to come.