Well, folks, no video on this one. But this page may be helpful and kid-friendly as you explore the wonders of William the Conqueror. Here are some images of the man himself.
And here's an interactive game where kids can actually reenact the battle, and see if they'll "alter" history. Boys may particularly get a kick out of this; it has some military strategy involved. This is may help cement the two sides and their leaders in mind, since the names are frequently visible.