Beetlejuice, Beetlejuice, Beetle…
From Wired.com —
If there was any doubt that Community was one of the smartest half-hour comedies to ever air on network television, allow us to enter this into evidence: The show spent three years setting up a joke about Beetlejuice, and that joke was simply an Easter egg hidden amongst other already amazing gags.
Here’s how it played out. Over the last three seasons of the show, the writers have worked the word “Beetlejuice” into three separate scripts. On the third utterance, what happened on the show is exactly what’s supposed to happen when you say the ghost’s name three times.