Do you have the Kleenex at the ready? Because the retirement of two British sporting greats is a powerful memento mori Its BBC Sports Personality of the Year on Tuesday, so ask yourself: are you prepared for montage season? Its dangerous to go into these things cold. You never know which clips are going to hijack your limbic system and leave you a gulping, snot-strewn mess. It could be Keely Hodgkinson crossing the line,