I almost missed this one because I was turned off by the commercials and previews, with their emphasis on the silliest parts (the dancing donkey, etc.). What a mistake that would have been -- I'd have missed one of the driest, archest, loveliest scripts in years. Emma Thompson can do more with a slightly quirked eyebrow and a quiet "Hm" than most actresses can with an entire Shakespearean soliloquy. The whole cast, children and adults alike, is pretty near perfect, some of the best of the British theater even in the tiniest roles (Derek Jacobi, Imelda Staunton et al). The kids are tough and tart, without a simper in the lot, unlike most US child stars.
Don't let the trailers keep you away -- this is well worth seeing, sort of what Lemony Snicket should have been but wasn't.