I couldn't imagine that any movie preview this year would compare to the marvelous Where the Wild Things Are trailer released way back in March, but I should have guessed that if any came close it would be... the second trailer for Where the Wild Things Are:
There are also new, somewhat enticing trailers out for Peter Jackson's The Lovely Bones (I never read the novel, and confess to being a little disturbed to find that the murderer is Paul Child, right down to the glasses and moustache):
...and for Wes Anderson's The Fantastic Mr. Fox, which offers some evidence that stop-motion animation has offered him a way out of his ever-constricting artistic vision:
--Christopher Orr