The director chose to use a real cable car instead of a prop cable car. So when the realtor follows David across the street to Elizabeth's apartment, she runs across the tracks in her heels to avoid the cable car. Co-writer Leslie Dixon suggested using the apartment where she used to live for shooting. She also suggested Jon Heder for the role of Darryl. Both of these suggestions were taken. After a bad take while shooting, Mark Ruffalo jokingly jumped out of a window on the set. He lande ...[Read Story ]