I'm a fan of lists. If lists had a concert, I'd be first in the queue to get tickets. Okay, so I may have overdone the metaphor for my love of lists. But it's true. I have hundreds of them. My 'what to buy just incase I win a million pounds' list. Or 'stuff I should do today but am putting off until tomorrow' list. And my favourite, which is stuck to my notice board yellowing and slightly frayed around the edges, 'things I must do before I die' list. I fear I've said the word 'list' too much here, so much so it has started to lose all meaning. What's a list again?