Last night I watched the film Sleepless in Seattle for the first time in a while and enjoyed seeing some parallels to Frasier! To start, Niles, Kenny, and Mia are all there; David Hyde Pierce's character is even a psychologist. The story starts with a boy calling a Seattle-based radio psychologist for advice with his dad, which ultimately brings two people together in love.
It's kind of funny because the film was released in June of 1993 and the first Frasier episode premiered in September 1993. I wonder if the movie had any influence on the show. I know Niles' character was a later addition after realizing DHP looked like KG's brother, so it's possible! If anyone has any knowledge on the matter, feel free to share! Otherwise, I just wanted to share