Alistair McGowan looks at the legends of the green baize who helped make snooker both a national obsession and a television phenomenon. Alistair's exploration of the BBC archive's deepest pockets uncovers rare interviews with the players who set new standards in the game, from the explosion of characters and colour in the 1970s to the dominance of Davis and Hendry in the 80s and 90s, and the famous black-ball final of 1985 that shattered nerves and TV viewing figures.