He was almost always serious when it came to The Sky at Night but so often humorous in his other televisual escapades. I was worried for his health in the mid-2000's and yet he made a marvellous recover and kept us watching until his final days.
His book "80 not out" told of a stupendous life with great humility. I would loved to have had one of his banana curries or a letter from his typewriter whilst he was still around.
I think this show will be remembered long into the future (Or at least I hope it will).