After Lorenzo answers the door to Julie's room when Sam knocks on it, Sam says: "I've got to stay off boats, man!" This would be an allusion to the time when Dianne turned Sam down on rented a sailboat in season 5 and to the sinking of his own boat between seasons 5 and 6.
Julie suggests Evan Drake is between 45-50 years old. Tom Skerritt, who played Drake, was actually 55 when the episode aired.