There were actually a few times when Lawrence O'Donnell and Chris Matthews were so unhinged that, in comparison, Keith Olbermann showed fleeting moments of rationality. I caught several instances of him rolling his eyes when O'Donnell and Matthews had really gone off the rails.
Of course after those atypical occasions of momentary decorum, the reprehensible Olbermann bounced back to his more comfortable role of a screaming banshee for the left.
I was going to say, where is the center part of that “center-to-left” lineup?