Ok, just watched this yesterday with the wife...LOVED it. Thoroughly entertained...altho I agree with Jason, in that the love interest could've been left on the cutting room floor and the movie would not have suffered one bit.
I thought Paul Giamatti was very convincing as the dastardly King John, and of course, thought James Purefoy played the stoic Templar well. Not like he hasn't had any previous experience portraying a knight, eh? lol
All in all, we both thought it a good movie and I'd already added it to the collection so we're all to the good. Also got Valhalla Rising...will review that after I've seen it over the weekend.