Woody Allen's character is an insurance investigator and he says "The little man in here tells me", pointing to his heart, exactly as Edward G. Robinson's character did when he played an insurance investigator in Double Indemnity.
Woody Allen's character walks deliberately in one of the early scenes from his office to Helen Hunt's office in a manner that very much resembles Lee Marvin's walk at the airport in Point Blank. Woody Allen has the same stride, the same bounce in his step, the same hair fallen in his face, the same blank facial expression and the same sound of his echoing footsteps resonating through the hall.
Woody Allen's character makes reference to a short story he wrote about an overbearing mother and an Odysseus complex, which mirrors the plot of a segment he wrote and directed in real life in New York Stories.