Not for the first time in the past few years, Norman Cook looks nervous. The 41-year-old, aka Fatboy Slim, the most groundbreaking British DJ of his generation, fiddles with a roll of black gaffer tape, keeping his hands busy now that he's given up smoking, and glances restlessly around the balcony of his seafront home in Brighton. When Cook first moved here in 1998, this was his sanctuary: a spacious retreat with a private stretch of beach. Almost two years ago, however, it became a prison. After the news broke that Cook and wife Zoë Ball had split, tabloid photographers dug themselves into the beach and hired boats in a bid to get a fresh snap.