The Fisher King is a wonderful blending of the realistic and the fantastic, a reminder that the mythic need not be inaccessible, and that the hero need not slay a dragon.
If Time Bandits is a child's polemic against greed and selfishness that ultimately ends in the reveal of the truth of the universe, then The Fisher King is a movie in which our hero steals the truth about himself back from the cold hands of the universe and an uncaring God.