So a picture IS worth a thousands words…

Celebrity documentary profiles are hardly a rarity, but this all-too-brief series offers an intriguing take on the genre by discussing key moments in its subjects’ lives, as captured in ten defining photographs. The stars featured are Freddie Mercury, Tupac Shakur, Elizabeth Taylor, Muhammad Ali (above, in his home town of Louisville, 1960) and John Lennon. Fans, experts and those who knew the stars offer their stories and opinions. BBC iPlayer, available now