LexX said:

I remember Portman saying when TPM came out that she hadn't seen any of the films and only watched them when she was cast in TPM.

There is no doubt in my mind that Portman only agreed to the films because she and her parents thought it would be good for her career. She seemed to have zero interest in the themes and magic of the original trilogy.

I think she is also somewhat overrated as an actress. She does not have the unlimited range of the truly great actors/actresses. She excels at playing two types; waifs and jail-bait.

Were there not rumours that Lucas seriously considered replacing her with Keira Knightly for ROTS?