Just took in HP3 last night. Go see it - it's great.
Of particular mention is the CG character Buckbeak. On it's own, it is the most convincingly real and well animated CG creature FX I've seen used in a live-action movie this side of Gollum. What seals it is a sequence in the film where Harry Potter rides the creature, soaring through the air and across water so convincingly seamless that you are actually left wondering how it was accomplished. You believe you are seeing an actor atop a living animal.
What a huge leap beyond the poorly realized Reek ride in AOTC. There were several FX houses used on the new HP, but I'm pretty positive Buckbeak was handles by ILM.
Obi-Wan has what sounds like a similar sequence in Ep3. I'm expecting to be wowed, guys!
The bar has been raised and the standard set. Can't wait to see the results.