I had the pleasure to attend his 80th birthday conference (http://knuth80.elfbrink.se http://knuth80.elfbrink.se) in Piteå, Sweden where he also premiered his p

I had the pleasure to attend his 80th birthday conference (http://knuth80.elfbrink.se http://knuth80.elfbrink.se) in Piteå, Sweden where he also premiered his piece Fantasia Apocalyptica for church organ. We attended the conference as students but still got to see the conference, listen to the music and be at the birthday dinner free of charge. When I talked to Knuth I was amazed by his humility. Every presentation was about how grand he was, but he still was humble and friendly. They say you shouldn't meet your heroes, but they're obviously not talking about Knuth!