Viggo Mortensen is one of my favorite actors, specifically because of his work as Aragorn in "The Lord of the Rings" triology. Though I also enjoyed him in "Hidalgo". He is very attractive and in both movie, he sings. Very nice. :)
(I know I've shared this before, but it is so awesome you have to watch it again. And again.)
He's just that awesome. Definitely a dedicated actor. Who is your favorite actor?