Janskeet said:
Here's a line I don't understand:

"If you strike me down, I shall become more powerful than you can possibly imagine." Huh? How's that? I don't see how that would make him any more powerful, it would just make it easier for Vader to kill him.

We saw Luke and Vader get struck down and that didn't make them any more powerful.

um Obi Wan becomes more powerful because hes learned the secret of continueing life after death. Something Vader does not yet know! Seriously do you know enough about Star Wars to put out suggestions on how to edit it for the better?