Revealing mistake: When Hitch is wearing the fat face mask you can see where it has pulled away from his skin right next to his right eye.
Revealing mistake: In the scene where Hitch first meets Albert, Albert spills his soda. The can shoots open and spills over the steps. If you look closely the label on the can is upside down. This would be fine if the coke was spilling out of it but it shoots out and when he picks it back up it is still upside down.
Revealing mistake: After Ellis Island, when Hitch is closing the door on the taxi he got for Sara, his outer shirt is "pulled" into the cab just before the door closes and the cab pulls away, ripping his shirt off.
Answer: Sara is watching "Jerry Maguire" released in 1996. Check out http://www.imdb.com/title/tt0116695/ for more information.
moviemogul