Question: Who directed the film Ray Parker Jr is best known for writing and performing the theme song to?
Sentence (from "Ray Parker Jr."): Ray Erskine Parker Jr. (born May 1, 1954) is an American guitarist, singer-songwriter,  record producer, and actor, best known for writing and performing the theme song to the movie "Ghostbusters", for his solo music, and for performing with his band, Raydio, and with Barry White.
Relevant evidence: Yes