Hey BB,
Having attended one of Captain Browns lectures in Chichester a couple of weeks ago I know what you mean. He is so sharp and eloquent even at his age. He signs books, shakes hands and is a delight to listen to. He had his charming wife by his side and I think he is about to retire from public speaking.
He said he was good friends with Niel Armstrong and as a result was asked to train as an astronaut but when he was told he must become an American citizen first well, in his own words, "that was that" LOL.
Recorded the program (because I was flying, lol). Just about to watch it now.
Cheers, P.