Crichton: Why don't you come down here and find me, Gort. Klaatu Barada Niktu!
Gort is the alien robot in The Day the Earth Stood Still, and "Klaatu Barada Nikto" is the most famous quote from that movie. In the film Army of Darkness, the third installment of the Evil Dead trilogy, Ash has to speak similar words in order to retrieve the Necronomicon. He fails to remember it properly ("Klaatu. .. Verada...Necktie...Nectar...Nickel...It's an "N" word, it's definitely an "N" word") When he cannot recall what the word is, he attempts to fool the Necronomicon by speaking "Klaatu Verada N-" and then coughing and thus awakens a horde of malicious Deadites.