 At the beginning of the movie, Neal Page (Steve Martin (I) (qv))  races a character played by Kevin Bacon (qv) for a taxi. Later,  Neal phones his wife to tell her that he has been delayed (again),  in the background, you can here the fight from  _Shes Having a Baby (1988)_ (qv) (also directed by  John Hughes (I) (qv)) between Bacon and Elizabeth McGovern (qv),  when she screams that she doesnt like his friends girlfriend.