Straight from the Victorian music halls with their traditional mix of song, dance and comic skit came the tradition of the all round entertainer - an artiste who could 'do it all'. But despite this incredible mix of skills and after ruling the world of light entertainment for years, their chief mode of employment was to become hosts of variety shows, game shows, quizzes and competitions. And whilst an obvious waste of their talents, it did provide huge fame and money, as game shows quickly became the biggest hits on TV. But the all round entertainers are the masters of reinvention - from Bruce Forsyth to Michael Barrymore and Bob Monkhouse to Cilla Black, they adapted their skills to keep their place at the top of the slippery showbiz ladder, even as reality TV took hold of the schedules and fame rather than talent became a passport to TV stardom. Becoming a jack of all trades brings its own problems however and unappreciated talents, fragile egos and a craving for attention have