My favourite role for Richard Armitage I believe will always be as John Thornton in BBC's "North and South" which was set in England.
He is a wonderfully natural actor with a wonderful voice which envokes emotion and makes your heart melt. The emotions which he shows while acting is what I feel makes him so great on the small or big screen. The other thing I like most is his accent, it is truely wonderful and strong.
I have seen him in some of his others roles, but personally I would love to see him in another period piece - in particularly a series.