Trivia: In the part of the movie that begins with Valentine's Day, there's a shot of a store with a heart (and other Valentine's decorations) in the window. Pasted on the heart is a black silhouette of a man and woman looking into each other's eyes. If you look closely, you'll notice the silhouette is of Tom Hanks and Meg Ryan.
Trivia: Dyan Cannon, who is mentioned in the film and was married to Cary Grant (who is also mentioned), grew up in Seattle - West Seattle, specifically. The large house where many interior shots were filmed is in the West Seattle neighborhood on Sunset Drive. This house is less than two blocks down from where Dyan Cannon's father was living on Sunset Drive at that time.
Answer: It's called Empire State Montage by Hugo W. Friedhofer.