Comedian John Mulaney referenced the Gene Hackman death investigation in a monologue on his Netflix show.Mulaney joked about scientists trying to determine the exact age of dinosaur extinction, comparing it to the unknown circumstances of Hackman's death.Hackman, a legendary actor, and his wife were found dead in their New Mexico home in late February.Hackman's cause of death was heart problems and Alzheimer's, while his wife died from a rare rodent-borne virus.