Arrietty was pretty good. I'd say the art and animation are some of the best Ghibli has ever done. Can't say I liked Disney changing the characters' names to English ones, though, mostly since it was still easy to tell the movie was set in Japan.
Updated ranking of Ghibli films I've seen:
SA > Kiki > Mononoke > Ponyo > Totoro > Only Yesterday > Laputa > Arrietty > Nausicaa > Porco Rosso
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Congrats to 2011 Guru champ SuperNiceDog!