After three decades of making music together, the rock band R.E.M. have announced that they are calling it quits (as a group, anyway). Unfortunately, R.E.M. reached their zenith a number of years ago, so they're going out with a whimper, and not a bang. Still, it's been a good run. Someone on an internet forum I frequent (because that's what I do in my spare time -- visit internet forums) posited the following: I think you could make a strong case that they were the greatest American rock and roll band of the past thirty years. Now, I got to thinking about this. My initial reaction was a knee-jerk nodding of the head, but then further contemplation brought forth some doubt. There are other rock & roll bands that could vie for the title of 'greatest' from past thirty years, surely? Perhaps R.E.M. comes to the fore because of its longevity? But does quantity stand tall over quality? Seems doubtful. Let's look at some other rock bands from the past three d...