My current one is Sudoku. I just love the challenge to my intellect – it’s all about logic, and I can’t believe that I can’t get my head around it, given that I think I’m an intelligent person.

In the last couple of days I have had a couple of breakthroughs, after buying a “how to solve” book, and also using an iPhone app that shows you different techniques.

In the past my obsessions have been musical – Frank Zappa, The Beatles, Thelonious Monk, Erik Satie, and so on.

Is “obsession” human nature? (We’re talking First World problems here of course). I recently stayed with some old friends and as I retreated to the couch to indulge in my latest obsession this question was seriously asked. I don’t know. But I’m happy in my little obsessive world…