John Travolta makes an awesome villain.
I loved the part when he visits Nicholas Cage in the prison. "It's like looking into a mirror, yet not!"
And I think it was in the church scene when he said "Look here, it's the ultimate battle of good versus evil."
The thing I didn't like about this was how well thought out they have the main part of the plot, switch the faces. Then to cover up the rest, eh, we use lasers to change everything else.