Michael Keaton is seen wearing a Pittsburgh Pirates hat in the movie. Keaton is from Pittsburgh, and an avid Pirates fan.
Michael Keaton turned down Batman Forever (1995), when Tim Burton left the project, to make this film instead.
Inspired by the real-life relationship between James Carville and Mary Mataline. Unlike their film counterparts, Carville is a Democrat who worked for Bill Clinton's campaign, while Matalin is a conservative Republican who worked for George H.W. Bush.