He is a very honest, down-to-earth kind of person, and I really enjoyed our conversation.
Then there's his incredible sense of humour! That's one of the things I really liked about him. I also read somewhere that Neil Armstrong and Buzz Aldrin deliberately picked Charlie to be their Capcom during the lunar landing because of his abilities, and it's pretty obvious from the transcripts that he did an excellent job.
I love his brief exchange with Mike Collins before the landing:
Seventeen minutes before the lunar module Eagle commences powered descent to the first manned lunar landing, Capcom Charlie Duke advises Mike Collins in the command module Columbia that Houston expects to temporarily lose communications with him via the high gain antenna.
102:16:00 Duke: Columbia, Houston. We expect to lose your high gain during the powered descent. Over.
102:16:19 Collins: Columbia. Roger. You don't much care do you?
102:16:22 Duke: No, sir.
I probably heard that on the radio here in New Zealand as it happened, but wouldn't have "got it"' way back then. Have also been saving the Spacecraft Films' Apollo 16 DVD set for the duller days this winter, so I can enjoy more of the humour of Charlie and another madcap on the moon. Not long to go now!