Transformers and trailers

So I went to see Transformers last night - very good film and I highly enjoyed myself (although I think I got a few more of the jokes than the rest of the audience). I was also surprised at the amount of sarcastic humour in it - there has to be a British (or Canadian) influence in there somewhere.

What did disturb me, however, was the trailer for The Dark is Rising film. What the hell have they done to it? The lead boy is now an American, Merriman Lyon has shrunk a little (I love Ian McShane but he's too damn short) and the Old Ones have weird and wonderful supernatural powers? Not the last time I read the books.