sentences:  "The Thirteenth Floor" (1999), like "Blade Runner", is an explicit homage to classic noir, in this case involving speculations about virtual reality.Science fiction, noir, and animation are brought together in the Japanese films "Ghost in the Shell" (1995) and "" (2004), both directed by Mamoru Oshii, and the short "A Detective Story" (2003), set in the "Matrix" universe.