Lucy's lines

Lucy Liu had some trouble learning her lines for the hit summer animated film "Kung Fu Panda." But that wasn't her fault. A lot of the time, she said, there weren't any lines to learn.

"Working without knowing what you are doing from start to finish is very difficult," Liu said. "It was really improvisation. It was exciting. It keeps you on your toes."

Liu said she is particularly happy to be in a movie about China: Both of her parents were from Taiwan before moving to New York, where she was born and raised.