I love documentaries. I really do. I think documentaries – I’m much more interested in non-fiction than fiction; just the way that I think about things. I can’t remember a documentary that I said, “That’s a bad documentary.” ... But as far as titles of documentaries? You know what was good was Amy. ... It was really good. The beauty and tragedy of an artistic genius.

I’ve actually got a huge, huge list of documentaries that I’ve been meaning to watch, many of them collected from the guests in your Tools of Titans book. The one I did watch and enjoy is actually a series rather than a documentary; the remake of Cosmos. ... The topics he covered in those episodes was so stunning, and it was a great education for my son who is very, very into science himself. So that’s the documentary that stands out in my mind, probably the most interesting thing in the last five years, anyway.

My favourite documentary, that’s lovely and everyone should watch, is called Water: The Great Mystery. It changed my perception of the whole planet more than maybe anything ever. Dr Masaru Emoto’s water research is very profound.

I love—I’m a sucker for a rock doc. So I will watch pretty much any rockumentary that comes out. So I’ve—obviously, the king of them is The Last Waltz, which is a Martin Scorsese movie about the final concert put on by The Band. There actually is a new documentary called Once Were Brothers, I believe, and it’s also about The Band, Robbie Robertson.