 The elder penguin at the Zoo (voice by Lee Perry (I) (qv)) is a  reference to HAL 9000 from _2001: A Space Odyssey (1968)_ (qv).  Quote: [Mumble] Excuse me. What is this place? ["HAL"] Youre in  heaven, Dave. Penguin heaven. [Mumble] Is it anywhere near Emperor  Land? ["HAL"] Its wherever you want it to be. ["HAL"] Try the  water, Dave. Its really real.