No one got under [Frasier]’s skin like Lilith did. Lilith was as smart as he was; Lilith saw his every trick, his every move. So it was one of those great duos, where one character gets under the other character’s skin, and makes that character explode. (…) Frasier was - in his own, smart way - he was an everyman, a guy who’s very easily frustrated and thrown off his game. And Lilith was the perfect foil for that.