Ah that's really annoying, I haven't read the books myself but a friend has and it caught my attention (esp. with Lena Headey and Sean Bean in it).
I'm sure Nikolaj will be good, but I'd rather never have known about Jamie auditioning ;)
But it's true that they often use actors they've already seen in the audition process. (Didn't Trucco audition for Lee?) Has anyone read the books, is one of the chracters in the later books suitable for Jamie?