If you're going to compare anything to MSNBC, you're setting the bar mighty low.
I think that 60 Minutes regularly displays the same kind of partisan propaganda that can be seen at MSNBC - only they do it perhaps a bit more intellectually. Yes, 60 Minutes has lofty production values and doesn't engage in the over-the-top rhetoric that MSNBC does, but that doesn't mean that their stories aren't any less subjective or slanted.
60 Minutes doesn't even have a house libertarian, like a John Stossel over at 20/20. I've never seen a story on 60 Minutes that addresses wasteful government spending, except with respect to the DOD. I've never seen a 60 Minutes "gotcha" story with a Democrat politician. Nope, 60 Minutes is just as bad as MSNBC, only with better packaging.