“How much do we know about the people we rub shoulders with every day?” is the question at the heart of this BAFTA-winning documentary first broadcast in 2007. The parallel lives in question are those of Mark ‘E’ Everett – the front-man of the band Eels – and his father, Hugh – a theoretical physicist famed for his many worlds interpretation of parallel universes.

We follow Mark as he chats to former colleagues and students of his father – a genius who abandoned academia in favour of the defense industry when it became apparent that the science world wasn’t ready for his theory. Mark knew nothing of the waves his father had made even up until his death of a heart attack in 1982.

“My father never, ever said anything to me about his theories. I was in the same house with him for at least 18 years but he was a total stranger to me. He was in his own parallel universe. He was a physical presence, like the furniture, sitting there jotting down crazy notations at the dining room table night after night. I think he was deeply disappointed that he knew he was a genius but the rest of the world didn’t know it,” – Mark Oliver Everett.