Anyone who has a problem with the casting choice really needs to re-watch (or watch) "no country for old men". Determination in the goal no matter what cost or sacrifice made and he is mostly silent throughout the move. He gives a very real weight to Roland. He also has an accent which is beneficial not a draw back because Roland is -not- from our world. His written language, his speech and everything about him is other worldly determination. Rarely have I ever seen an actor do this better then Barden. This is what they were looking for. Not what we saw in our minds when we read the books but someone who can convey an entire character through mannerism. They can give him make up and contacts and even change his face shape if they need to to get the look but they would loose out greatly if they choose someone based solely on Mr Kings physical description.