Oooh-err, cripes! He's the lovable, capering political puppy-dog, the blonde-headed mop of a Mayor of London who we all know so well, and can't help ourselves from grinning at when he's on the box! Been on the box quite a lot too, hasn't he, what with the Tories' conference and all that. Boris, though, is also probably the biggest threat to the Labour Party's electoral prospects since that recent nonsense about (chuckle, chuckle) boundary changes.