I wholeheartedly agree and can only really add my own personal examples. I think the first recording of his I heard was Beethoven's Piano Sonata No.18, Op.31 N

I wholeheartedly agree and can only really add my own personal examples. I think the first recording of his I heard was Beethoven's Piano Sonata No.18, Op.31 No.3 from the 1970-77 recordings, and I was struck by just how different his interpretation was compared to some of the perhaps-more-well-known performers such as Daniel Barenboim. Even just the first two bars from the first movement were different and interesting enough to capture my attention.