The scene in Linda's apartment when Gary (Andy Garcia) fakes a pain in his side was improvised and fooled even Andie MacDowell. Her laugh at the end of the scene is authentic.
Most, if not all, of the ticket scalping scenes were shot with a hidden camera to real people purchasing real tickets.
The end credits includes a song about Gary's Plaque-O-Rama which was based off of the jingle that Andie MacDowell improvised during the shooting of a scene.
The pope visit at Yankee stadium was filmed during an actual Yankee game in 1997 this is clearly noticed due to all the spectators wearing Yankee apparel outside the stadium.
Filmed in the summer of 1997.