That's a fantastically energetic and exciting trailer. I agree with John, if the movie is that good
I've been praising RDJ since his hire, and I continue to find reasons to do so. I think this will be a huge role for him. Not necessarily in terms of performances, but in recognition. People are going to take notice of his natural humor, charm, and ability.
The effects work by ILM (and probably some others) looks truly exceptional. Even better, the wild card for me was Favreau's direction (and I like Favreau), and I'm not worried about that anymore. Anyways, two months. I just can't wait for this.