When Kate and Tony visit the photo studio for information on who took Tiffany Jordan's amateur photo's for the magazine layout, the photographer pulls the press release form. The address given for the mystery photographer is "1313 Mockingbird Lane", which is the famous home address of the The Munsters (1964) of the '60's sitcom fame.
Luke Walters, the prisoner Kate and Tony question, is in the fictional fraternity Alpha Chi Delta, which is based on the real-life Panhellenic sorority Alpha Xi Delta.
Kate's winning wet T-shirt contest picture is dated 1994. If Kate's birthday is in 1973, she would have been 21 at the time of the picture.
During the car wash intro we see either the real or a replica of Devon Aoki's 2001 Honda S2000 {AP1} from 2 Fast 2 Furious (2003).