Excalibur - USA (1981), directed by John Boorman. The tale of King Arthur and the Knights of the Round Table. With Nigel Terry as King Arthur, and Helen Mirren as Morgana. Several well-known actors made their film debuts in Excalibur - Liam Neeson as Sir Gawain, Gabriel Bryne as Uthur, and Patrick Stewart as Leondegrance.