With Pete Seeger's 90th, I'm thinking about Gregory Corso, and Allen Ginsberg, both of whom barely made it to 70.
Gregory crashed with me when I was a teenage undergrad at SUNY/Buffalo. He told me, back in 1971, "Janie, baby, if anybody ever calls you crazy, it's a compliment."
Wherever you are now, Gregory, I'm sure of one thing---you're still giving 'em hell.
http://en.wikipedia.org/wiki/Gregory_Coen.wikipedia.org