1. The final episode of The Angry Beavers, "Bye Bye Beavers," never aired because it broke the fourth wall, featuring Norbert and Daggett receiving word that they were being cancelled.
2. Nickelodeon's classic green slime, that you've seen dumped on gameshow contestants and celebrities, was mostly vanilla pudding, applesauce, oatmeal, and green food coloring.
3. Nickelodeon Gak was named after a street term for heroin in Philadelphia.
4. On The Fairly OddParents, Timmy Turner's hat is pink because creator Butch Hartman ran out of blue ink.
5. There's an original Rugrats pilot that never aired, called "Tommy Pickles and the Great White Thing."
6. All of the children on Rugrats were voiced by women.
7. Busta Rhymes was the voice of Reptar.
8. There was a lost horror movie made by Nickelodeon called Cry Baby Lane. It aired once in October 2000, but received complaints that it was too scary for children.
9. Suzanne Collins, author of The Hunger Games trilogy, wrote for multiple Nickelodeon shows, including Clarissa Explains It All, and The Mystery Files of Shelby Woo.
10. Arnold's (from Hey Arnold) last name is Shortman. Arnold Phillip Shortman.
11. Kurt Cobain allegedly wanted to write a song for Ren & Stimpy, but was turned down by the show's chiefs.
12. Doug and Patti didn't end up together, according to the show's creator, Jim Jinkins.
13. Neal Brennan, comedian and co-creator of Chappelle's Show, was a writer for Nickelodeon's All That.
14. The Dinks on Doug were named after the phrase, "Double Income, No Kids."
15. Nickelodeon had a short-lived Rugrats spin-off called Rugrats Pre-School Daze. It lasted for four episodes.
16. Constance Shulman, who plays Yoga Jones on Orange is the New Black, also voiced Patti Mayonnaise on Doug.
17. Hey Arnold! originally began as a claymation series that aired during Sesame Street. The shorts featured four future Hey Arnold! characters: Arnold, Helga, Harold, and Rhonda.
18. On April 30, 1992, Nickelodeon buried a time capsule that won't be opened until 2042 (50 years later).
