25 Greatest Easter Eggs From The Last 20 Years Of Horror
7. Halloween H20

When co-star of the original babysitter slasher, PJ Soles, turned down the role of Laurie Strode-in-disguise Keri Tates secretary in Halloween H20, it made way for one of the best cameos in the history of cinema.
Enter Janet Leigh, aka Marion Crane - the secretary stabbed to death by Norman Bates in Psycho. H20 director Steve Miner used her appearance to execute a string of subtle gags. She drives the same car as her character in Psycho, bearing the identical license plate, and just in case you missed that - listen up! As she stands talking to Tate (Jamie Lee Curtis) strains of the Psycho soundtrack can be heard.
Their banter continues, with Norma telling Tate that as its Halloween everyone is entitled to one good scare - a line spoken by Sheriff Brackett in the original Halloween, bringing the book-ends of the franchise into a neat loop. The cherry on top of this sundae is what Norma says to Tate by way of advice: If I may be maternal for a moment...
Janet Leigh is Jamie Lee Curtis mother.