<P> Finally, at the end, a bus shows up outside the Krusty Krab, despite Squidward claiming that the buses do not run this late at night . The bus then drops off a mysterious dark silhouette matching the description of the Hash - Slinging Slasher . SpongeBob and Squidward immediately realize that they are experiencing genuine supernatural events and panic . When the strange, unidentified figure enters the building, it is revealed he is simply a kid applying for a job, stating that he had tried calling the Krusty Krab by telephone earlier, but had hung up out of nervousness (the bus that he arrived in remains unexplained). However, Squidward then questions who was flickering the lights earlier . It is then revealed that the flickering lights are caused by doctored footage of Count Orlok from the 1922 silent film Nosferatu, with whom the characters are inexplicably familiar, flicking the light switch on and off . </P> <P> "Graveyard Shift" was written by Mr. Lawrence, Jay Lender, and Dan Povenmire, with Sean Dempsey serving as animation director . Lender and Povenmire also served as storyboard directors . The episode originally aired on Nickelodeon in the United States on September 6, 2002, with a TV - Y7 parental rating . </P> <P> Episode writer Lender proposed to have Count Orlok of the 1922 silent film Nosferatu appear as a gag at the end of the episode . Series creator Stephen Hillenburg accepted Lender's proposal and allowed him to do it . Lender said, "Steve gave you the opportunities to do things that would really be memorable, if you could sell him on it ." Lender then searched for books with scannable pictures of Count Orlok . However, the image of Count Orlok used in the episode was taken from the Internet . He said, "I searched what little there was of the Web back then ." Nick Jennings Photoshopped the smile on Count Orlok to make sure it matched Lender's board drawing . Lender said, "It was my baby, and I held its hand until we shipped it overseas (to Rough Draft Studios in South Korea)." Before his idea of Count Orlok, Lender thought of "Floorboard Harry", a deleted gag that concludes the broadcast episode, in which he initially flickers the lights . </P> <P> "Graveyard Shift" was released on the DVD compilation titled SpongeBob SquarePants: Nautical Nonsense and Sponge Buddies on March 12, 2002 . It was also included on the SpongeBob SquarePants: The Complete 2nd Season DVD released on October 19, 2004 . On September 22, 2009, the episode was released on the SpongeBob SquarePants: The First 100 Episodes, alongside all of the episodes of seasons one through five . On September 14, 2010, "Graveyard Shift" was released on the SpongeBob SquarePants: 10 Happiest Moments DVD . </P>

Who is the guy flickering the lights in spongebob