I turned the pages for John Ogdon, as documented last February under Pianist Jokes in the Miscellaneous section. Actually, I met him several times, because I worked as a (very junior) recording engineer at Decca in the late 1960s. He was rather shy, and effusive in his thanks. I also turned pages for him when he recorded some Messiaen (Vingt Regards, I think), and when they sent me into the studio, he was so keen to find me a chair that he stood up too quickly from the piano, wheeled round, and promptly fell flat on his face. I remember the producer being worried that he might have hurt his hands, but he was OK, and just carried on.
Stephen Bishop-Kowhatshisname once observed, "have fun with your musical toy," as I walked on stage at the South Bank to play Stravinsky's Etude pour Pianola. That gets "nul points", as they say in the Eurovision Song Contest.
A very dear friend of mine, now eighty, and also a former Decca engineer, had Clifford Curzon round to dinner, and gave him baked beans on toast. He also picked him up at Vienna airport for some recording session or other, and as they drove through the red light district, Curzon asked, "So tell me, Jack, what exactly do these women do for half-a-crown?"
I'd be interested to know of any modern pianists with that sort of twinkle.