The piano piece playing throughout the episode is Tchaikovsky's The Sick Doll.
This episode is the directorial debut of noted writer/producer Akiva Goldsman. Due to the cancellation of "Kings" though, an episode of 'Fringe 2009' that Goldsman directed aired on television first.
In a deleted scene involving David and Michelle talking by the riverside, a boat can be seen with the words "New York Water Taxi" painted clearly on its side.