Death (all right, near death), addiction, conflict, betrayal, succession, loyalty, ambition… oblivion. Politics has it all. And it only takes a massive stroke or an intractable personality defect to take the story in a distinctly Shakespearian direction. Respect to tipsy Charles Kennedy and unconscious Ariel Sharon for the most gripping week in politics in years. Gripping enough, I’m sure the Channel 4 people will confirm, to make even the most postmodern Big Brother ever look a bit pedestrian.