I thought the actress who played Mima in the US dub of Perfect Blue did an amazing job. I can happily watch that film in English.
On a slightly different note, whilst trying without success to find the actress's name on IMDB, I just found out that the film's director Satoshi Kon tragically died of cancer 5 years ago. We lost a film making genius.
Yes, all of his movies are absolutely brilliant. Big fan of his work, especially, Millennium Actress and Paprika. He is one of the best anime movie directors of all time. It's sad that he died at a young age.
