The name of the entomologist.
Both Mulder and Dr. Bambi Berenbaum quote a scene from the movie and state that they're big fans.
The drugged up kid mentions the movie to his stoner friends.
Scully reads "Breakfast at Tiffany's," referencing David Duchovny's Final Jeopardy! question from when he appeared on the game show.
The dog returns.
Both the stoner kids and the dog return.
Mulder and Scully finds the government facility with killer bees.
The stoner kids return.
The movie plays on TV in the hotel room.