Just how obsessively geeky is NBC's recently shelved sitcom, Community? So much so that they have been sneakily incorporating the name "Beetlejuice" into the script, once per season, for three seasons. And you know what happens when you say "Beetlejuice" three times, don't you? Believe it.
Credit to the eagle-eyed nerd commandos of Reddit for uncovering the Community Easter egg to end all Community Easter eggs. (And sadly, we might mean that literally.) [Reddit]