In 1981, this John Boorman retelling of the Arthurian legend was made with a virtual Round Table of future film stars, including Liam Neeson, Gabriel Byrne and Patrick Stewart, in addition to established scene-stealer Nicol Williamson, who plays Merlin. No one, however, stole more scenes, or stole them more memorably, than Helen Mirren as the evil spell-caster Morgana. I’ve been under her spell ever since.