I admit I'm on a video kick this week. Brittania has a great portal with lots of information on the legend of King Arthur. A couple months ago, I was watching Michael Wood's "In Search of Myths and Heroes" with my father-in-law. The series include chapters on King Arthur and the Holy Grail, Shangra-La, The Golden Fleece, and the Queen of Sheeba. It's definitely worth catching a broadcast of the show or purchasing the DVD's (US - UK). I don't want to give away the ending to the King Arthur chapter, but I will say that Michael Wood finds a bit of truth to the myth.