I don't know that much about wizardry books so I'm connecting this book with the greatness that is Star Wars. I believe that movie series and this book have much in common. I guess wizardry and space adventure aren't that far apart.
I believe the tow series follow the same rules when it comes to the stories heroes. In A Wizard of Earthsea, the hero is a wizard named Ged. Ged was anointed to be the greatest wizard of all time since he was a kid. Everyone saw it in this man; he was even sent to go train with an Arch Mage to perfect his powers. He loses patients and goes to a school where he can learn quicker. In this school he becomes powerful and is almost overcome by evil. He doesn't become pure evil but he does create a spirit that is trying to take him to the dark side. Through a long journey he becomes the man he is supposed to be and saves the day.
Now compare this to Darth Vader. Mr. Vader lost his mom at an early age, was told he was going to be the one to save the universe, was sent to trian with a Jedi named Obi-Wan (maybe you heard of him.) Then he becomes power hungry and leaves his training. When Vader does this he joins the dark side. This is the small difference in the two stories. However it is similar because this is where Vader ulitmately becomes the person that he is supposed to be. Through his journey Vader does bring peace to the universe and becomes one of the greats just like our friend Ged.
The similarities are eerie. I wouldn't consider either to be a true hero, but they are characters that people relate too and cheer on. This seems to be a winning formula for characters as both are legendary.
The clip I chose to pick is where Darth loses his patience and becomes evil. I see the similarities in him and Ged.
Darth Vader Scene
Darth Vader Scene