Where will you be at that 'olympic handover moment' on the afternoon of 24 August when London becomes the next Summer host city? At Notting Hill Carnival? At the huge Buckingham Palace party with 40,000 others and, er, Will Young? Or watching (and possibly drinking) at one of London's open-air big screens or inside a pub? Wherever you are, you are likely to see video clips of people having a bit of a laugh.......