Single Cell Anniversary is an episode from season 7.

Single Cell
Single Cell Anniversary
Episode No.: 122b
Airdate: June 3, 2009
Season: Season 7
Previous Episode: Chum Bucket Supreme
Next Episode: Truth or Square





  • Oh My Karen


Plankton comes in with a horrible smell. Then Karen cleaned him. Then SpongeBob helps Plankton get the perfect present for Karen and Plankton's Anniversary. Plankton sings a song for Karen from his heart as Karen's present. After the song Karen downloads the Krabby Patty Formula. Spongebob tries to stop her but he couldn't stop her. When the download was about to be completed Karen shed tears and shorts out herself, causing the Krabby Patty Formula to disapear. The Episode ends with Plankton's mother-in-law bragging about their marrige.


  • Third time SpongeBob helped Plankton. The first time was in F.U.N. when he helped him learn about friendship. The second was in Bucket Sweet Bucket when he helped fix the Chum Bucket.
  • This is the second time Sandy's helmet breaks. First is in Pressure.
  • This episode is similar to a SpongeBob comic.
  • Karen printed (copied) out the secret formula, but later, she is downloading the formula for Plankton. What happened to the copied formula in the bottle?
  • This episode marks the first song with lyrics since Atlantis SquarePantis.
  • Karen has a mobile version and a wall-mounted version, along with many other episodes.
  • Lots of specifications are revealed about Karen, such as the fact that she has 256 GB of RAM.
  • Karen's family is referred to as applications (her mother in law can be acessed).
  • This premired as part of Deep Sea Danger Zone.
  • This episode has the same beginning music as Plankton's Regular.
  • This is the first time Karen actually cries tears of joy and the second time having multiple faces to show different personalities. The first was The SpongeBob SquarePants Movie.
  • SpongeBob mentioned the Windows OS key command CTRL (Control). - Alt (alternate). - Del (Delete). This key command opens the Windows Task Manager (In Windows Vista, this brings up an options menu that includes Windows Task Manager).
  • Third time Plankton is seen without Mr. Krabs. The first time was Walking Small, and the second time was Patrick SmartPants (but only as a cameo).
  • A game based on this episode can be played at Pian-Oh-No! is based on Plankton trying to impress Karen.
  • This is the first and only time for "Love Emergency".