I admit I wasn't too excited about a remake of this classic even with the imaginatively talented Baz Luhrmann writing and directing it, but then I saw this trailer. Wow! I think they've cast this perfectly. However, I'm going to try not to compare this Gatsby to this Gatsby (or to this one or this one or this one).
"He smiled understandingly – much more than understandingly. It was one of those rare smiles with a quality of eternal reassurance in it, that you may come across four or five times in life. It faced – or seemed to face – the whole eternal world for an instant, and then concentrated on you with an irresistible prejudice in your favor. It understood you just as far as you wanted to be understood, believed in you as you would like to believe in yourself, and assured you that it had precisely the impression of you that, at your best, you hoped to convey." ~ The Great Gatsby