While trying to break into Ambassador Blaine's house, looking for Ashley, Cassie tells some boys who see them that Species is on cable, and they rush away eagerly to go check it out. Natasha Henstridge, who plays Cassie, was in the very revealing Species (1995).
Ray Wise played Dr Alec Holland who becomes Swamp Thing in Swamp Thing (1982). Derek Mears would go on to play Swamp Thing in the 2019 Swamp Thing TV show.