I've read on several sites now that Hayden's so monotone because he's imitating vader. I guess he was imitating him in Life as a House too. That dialogue coach really worked wonders in episode 3 for hayden. Natalie still gave a terrible performance and some believe star wars deserves better than that near-fanfilm quality... not just the acting, but the editing, and dialogue too... heck, the whole thing... scrap it and start over, I say.
I love the clone wars cartoons. If that had been re-worked into episodes 1 and 2, pulling plot elements from both and incorporating them into the story of the clone wars, with a stable main bad guy throughout all three films like dooku in it who then gets killed in the last one and replaced by vader... This new trilogy would have had a chance of surpassing the original.
The secret to immortality shouldn't seem like some throw-away afterthought at the end of this trilogy, but it did. And that's thanks to inept storytelling, wasting time to tell stories about podracing, tax disputes and midichlorian counts...
I hope that someone, maybe Lucas's son, will remake the PT some day. Like Lucas' says the OOT was about, "the children redeem their father's mistakes." or something like that.