Ok here is the actor who does the voice for Hadvar one of the first characters you have some sort of lengthy interaction with at the start http://www.imdb.com/name/nm2891419/ he was recently in the movie Angels and Demons with Tom Hanks.

Some of the others from the star studded cast which includes Max Von Sydow and Christopher Plummer http://www.imdb.com/title/tt1814884/

Check out the films some of these guys have been in...definately IS a star studded talented cast.

They should have hired David Hayter to do some Nords or even just voice the Nord Dragonborn (Hah!)