I'm not keen on the idea of watching Avatar just yet. It has been hyped too much and that makes me instantly cautious, especially when it concerns stuff coming out of wHollyWeird, etc. I can heartily recommend Mononoke though. I've been watching (and reviewing) Ghibli titles of late including Ponyo, which is very good, but Mononoke Hime is probably my fave Ghibli to date.