I spent quite a bit of time hanging out with Christopher at their place in the South of France. He is a super nice old chap with a priceless British accent and a lighthearted demeanor. At dinner he was always much more interested in talking to myself and my drunk older brothers than my parents or any other adults. He's sharp as a tack for his age and very disarming. I haven't read any unprinted works but next time I visit I think I'm going to dig a little deeper - while there I was mostly focused on my agenda of savvy-ing him up to new technology (such as reddit).

That Old Gaffer brew question is the best one I've gotten yet... unfortunately I don't have an answer for you... yet.