Actress Francie Swift, although I loathe the name, left an impression on me nine years ago on an episode of Law & Order in which she played a supposed victim of multiple personality disorder. I couldn't tell watching the episode whether she was not quite successful in her portrayal, or whether she was perfectly successful in portraying someone who was faking multiple personality disorder. I actually don't remember what the answer ended up being, but I clearly remember her ability to smile with vacant, soulless eyes. I've seen her in one or two other roles since then, but was just re-impressed with her on the Law & Order: Criminal Intent episode "Semi-Detached" that aired recently. Still those haunting eyes, and a lot of neat facial tricks that while not exactly subtle are quite compelling, especially when they are framed together with D'Onofrio's still-stuck-in-an-Edgar-suit mannerisms which I also enjoy watching. There are more pages of unwritten dialogue in that episode than written dialogue.
The nine years have also done her well physically, and I think she's even prettier now, in a not off-the-shelf manner.