Two days ago died John McCarthy. Wikipedia: "He was an American computer scientist and cognitive scientist who received the Turing Award in 1971 for his major contributions to the field of Artificial Intelligence (AI). He was responsible for the coining of the term "Artificial Intelligence" in his 1955 proposal for the 1956 Dartmouth Conference and was the inventor of the Lisp programming language".
John had a close cooperation (I'd say - friendship) with the Informatics Department (later - Novosibirsk Institute of Informatics Systems - ISI). I believe that it was also due to John's influence that an AI lab has been organized at ISI - where I was working for a long time, made my PhD thesis, and much more... My University mate developed in Novosibirsk one of the first ever and best implementations of LISP: John McCarthy who spent much time in Novosibirsk has himself written a lot of tests for this implementation. The ISI archive contains many old photos, here is one of them: John McCarthy (41) - at a celebration of 10 years of Informatics Department: