I have his and Clapton's autograph from Cream's first gig at the Marquee Club in London 16th August 1966, he's got to be one of the worlds best drummers.
I remember Cream's farewell concert from the Albert Hall. There was a BBC prequel to it that contained interviews with Eric and Ginger. Eric was asked to demonstrate 'woman tone' and Ginger played a whole bunch of riffs. I still have the tape I recorded of this programme by sticking a mic in front of the TV speaker.