Both George Lucas and Steven Spielberg appeared in a companion film to The Phantom Menace, titled The Beginning. Specifically, they act together in a wonderful scene where they discuss the nature of the battle droids from The Phantom Menace. They play it a little too straight for my taste (it's obvious we're watching a show within a show, if you will), but it does provide us with a rare opportunity to compare these two titans of the film industry side by side.

So...who's the better actor? What say you?

EDIT: This has morphed into a series of threads - Lucas v. Spielberg. We will be debating all facets of their lives, to determine once in for all who is the better man. This is Round 1.