As usual, my cup of vitriol spilleth over regarding yet another celluloid atrocity.
Script: Shit. Pure horrible shit. I won't bother quoting any of it, it's all shit.
Acting: Almost all shit. Ewan, Natalie, and Sam can all act up a storm yet in this they are just terrible. The only decent acting came from Ian McDiarmid, who managed to tap the B-movie magic vein and almost effortlessly become The Bad Guy. A nod goes to the kid playing one of the last Jedi - he stood out as one of the better performances of the film for the 5 seconds or so he was onscreen.
Editing: Endless overuse of the classic sweep-cut, to the point where it looked like someone with VideoToaster or some other cheap video edit tool went haywire on the movie. Scenes had nearly no flow, instead choosing to lean heavily on splashes of Star Wars lore (light sabers, Yoda, Star Destroyers) to distract the viewer from noticing that the story had completely changed direction. Who cares, right? It's all about ILM and their amazing art team!
Plot/Lore consistancy: This is where purist go nuts, and you can imagine what they say; I won't bother since I'm not a Starwars nut. The plot was riddled with glaring inconsistancies, the worst one being Anakin's reason for falling to the dark side. *SPOILER WARNING* He has a -dream- about his wife dying and he decides to slaughter his own family and countless innocents because a self-described lord of EVIL tells him he can save her? WTF? How about consulting with anyone on the Jedi council, Obi-wan or Yoda? Ridiculous. And the bit about nobody noticing Padme's pregnant or that Anakin is the obvious father... please. Are these Jedi, or clueless chumps? *SPOILER OVER*
Soundtrack: Fantastic. Really great.
And that's about it. That's why it's a failure of a movie. For Starwars fans it's going to be hit and miss, mostly miss, but as a movie it will disappear into obscurity within the decade, along with all the other new Starwars movies. They are fantastic spectacles that are magic to watch but have zero resonance with the dreams and emotions of their audience. At best.