cap said:

Ugh. Any chance of getting McDiarmid to record the line? ;-)

Not willing to reconsider “the son of Anakin Skywalker”? How about “the Rebel Skywalker”? We’ve got to be able to come up with something more fitting than “young.”

Here’s an outside-of-the-box idea. They both know who they’re talking about, right?

VADER: What is thy bidding, my master?

EMPEROR: There is a great disturbance in the Force.

VADER: I have felt it.

EMPEROR: We have a new enemy.

VADER: Yes, my master.

EMPEROR: He could destroy us.

VADER: He's just a boy. Obi-Wan can no longer help him.

EMPEROR: The Force is strong with him. The son of Skywalker must not become a Jedi.

VADER: If he could be turned, he would become a powerful ally.

EMPEROR: Yes. He would be a great asset. Can it be done?

VADER: He will join us or die, my master.

I’ll keep trying to come up with other alternatives. What are acceptable audio sources for the Emperor’s voice? Musical Journey has been ruled out. How about ROTS and ROTJ?

I was actually just thinking of that (omitting Luke's reference entirely, in the beginning part of the dialog), as I was reading through this page. It'd work pretty damn well, IMHO...