Who, in The Lord of the Rings, was the most effective liar?

[Boromir88]

Why is Boromir even in this poll? Why is Denethor? Come on, they are not bad guys.~MatthewM

I think it follows along the lines of what Nogrod said...

It can't be Boromir for his deception was short-lived and dubious in the first place as he regretted it and tried to heal the damage he had done. He was indeed effective to the good side in the end.

And you don't have to be a 'bad guy' to be a good liar. I tossed out the idea that Gandalf/Aragorn were just as effective liars as anyone on that list because they deceived Sauron into believing they were going to use the Ring to overthrow him. But instead, they snuck two hobbits into Mordor.

And I believe Bethberry said Tolkien was the master liar.