Continuity mistake: When Joe is on the yacht talking to his father, Joe is mixing up martinis, pours them, and adds an onion to one, and then an olive to the other. The camera cuts away to his father and then cuts back and now the second martini has no olive, so Joe adds an olive again. (01:30:11)
Trivia: In the scene where Tom Hanks is visiting Meg Ryan, she is in bed and he is sitting on the edge of the bed talking to her. Right before he gets up for a moment to pull up the covers over her, (now, turn the sound up for this one) he actually passes gas. You can hear the little "pop", he starts to grin and then probably realizes that the director is going to just continue on with the scene, so his grin fades and the scene goes on. I replayed this over and over. It really happened.
Kathleen Kelly: Is it infidelity if you're involved with somebody on email?
Christina Plutzker: Have you had sex?
Kathleen Kelly: No, of course not! I don't even know him.
Christina Plutzker: No, I mean cybersex.
Kathleen Kelly: No.
Christina Plutzker: Well, you know what? Don't do it, 'cause the minute you do, they lose all respect for you.
Person in Theatre: Do you mind?
Frank Navasky: A hotdog is singing. You need quiet while a hotdog is singing?