After their all-nighter, Nadine and Owen are seen coming out of a movie theatre showing Sidewalks of New York (2001), which was produced by director Brian Burns, and directed by his brother Edward Burns.
Ben's line about his jaw still being sore is a throwback to a famous Alvy Singer joke about "just getting feeling back" in his jaw. The movie parallels this movie and other Woody Allen movies in many other ways, as well.
