Jamie wears her hair long but when she and Paul go back to her office her hair is up. It changes again with a few strands framing her face and when she and Paul kiss, it's back up again.
Paul gives his address as 129 W. 81st Street and Jamie gives hers s 142 W. 81st Street, noting that they live across the street from each other. While Paul's address does match up with the address used by Jerry on Seinfeld (1989) (and Jerry and Paul as former neighbors was established in The Apartment (1992), Jamie's address is where the Mt. Pleasant Baptist Church is located.
When Mr. Gantz tells the story of playing in the 1950 Rose Bowl, he states that it was New Year's Day in 1950, but in 1950 the Rose Bowl was played on January 2.