The binary code reflected in the mirror (itself a parody of the "Redrum/Murder" scene in The Shining (1980)) reads 1010011010, that is, "666" in binary code.
The car that runs Bender over and turns him into a werecar is a 1958 Plymouth Fury. This car to some people is known by "Christine", which was the title of a novel by Stephen King about an evil car.
The ghosts chasing Bender along the castle hallways are the Microsoft logo and a toaster with wings from the popular After Dark screen saver.
One of the paintings in the castle says "Commodore LXIV", an reference to the Commodore 64, a very popular 8-bit computer from the 1980s.
In the opening shot, the 7-11 window has a sign offering "Free Bag Of Ice-9 with 6-Pack". In the 1963 Kurt Vonnegut Jr. novel "Cat's Cradle" Ice-9 is a unique crystallization of water that stays frozen at room temperature. A single crystal of this could disastrously solidify all water on Earth.