Leon was a great film, and Portman's performance helps make it so interesting. Just because she is cast in boring movies that I don't want to see doesn't make her a bad actress. Maybe Portman is bored with the AOTC script, or maybe she is acting exactly the way Lucas wanted her to! In the end, you should probably blame Lucas, because he was the one who cast her (and Jake Lloyd over that OTHER kid in the documentary who was like 500,000 thousand times better) and gave her the lines, and directed her performance. It was also Lucas who decided that her performance was "good enough" for the final product. Although I can't describe myself as a "Kubrick fan", Stanley K took responsibility for every aspect of his actors' performances. Most of his films are criticized for reasons other than bad acting. A Clockwork Orange has excellent performances all around, even by Vader himself, David Prowse! Lucas often settles for what he believes to be good enough, and what an audience might not consider to be good enough. For whatever reason, Lucas doesn't give himself the luxury of going late on a film. Every movie is released in May three years after the previous installment. There are indeed sacrifices of quality. I guess this is why the films have so many different reworked "versions". But if Lucas is in complete creative control of all aspects of the SW story, isn't it only fair that we blame him if some part of the films aren't great? Like, let's say, "whoopee" or the droid factory sequence?