Quentin Tarantino (who wrote the 1993 film) appears at the end as Izzy's new boyfriend, taking her to a Sonny Chiba triple feature. In the earlier film, the protagonist also meets his wife (also a prostitute) this way.
Jennifer Aniston's character, Jane, has a boyfriend called Joshua and a dog called Chip, who were names of boyfriends of her famous character, Rachel Green.