Who are you? A question of course initially posed by renowed philosopher Roger Daltrey. This week we also ponder the issues of identity;  How much of ourselves die when our loved ones die? How much of our identity is lactated away when we become a mother? What should you do when you wave at someone then realise it's your own reflection in a mirror? And will Kirsty ever be able to say 'unfathomable'? Whatever you do, the conclusion is clear - just be yourself. Unles you're a twat. Then try being someone else.