I think the guy did a great job. Few of us are perfect, and I suppose he isn't either, but he did the tough work and didn't waiver, in spite of all the cr... er, I mean.... 'stuff' he had to put up with from his inferiors... (Teddy Kennedy comes immediately to mind (...although there were certainly others, to be sure.)
...IMO We'll be worse off without him.
We all liked Rummy, well most of us anyway.