The 100 Greatest Nicktoon Episodes was a countdown of Nicktoon episodes, voted on by viewers on Nick.com in late 2007. As the name suggests, the countdown consisted of already-aired episodes from every Nicktoon up to that point, with the exceptions of Oh Yeah! Cartoons and Pelswick.
In the Superstuffed Nicktoons Weekend for 2007, clips of the episodes were shown before and after commercial breaks. This culminated in a series of weekly marathons on the Nicktoons Network, each one showing ten of the episodes in question.
After 2007, clips from several of these episodes were shown during commercial breaks on the Nicktoons Network as "Rockin' Nicktoons Moments". The network eventually stopped showing the clips following its 2014 rebrand.
| # | Show | Episode |
|---|---|---|
| 100 | The Wild Thornberrys | "Forget Me Not" |
| 99 | "Flight of the Donnie" | |
| 98 | "Cheetahs Never Prosper" | |
| 97 | As Told by Ginger | "Gym Class Confidential" |
| 96 | The Ren & Stimpy Show | "Son of Stimpy" |
| 95 | As Told by Ginger | "Stealing First" |
| 94 | The X's | "A Truman Scorned" |
| 93 | Rugrats | "Chuckie vs. the Potty" |
| 92 | ChalkZone | "Pumpkin Love" |
| 91 | El Tigre: The Adventures of Manny Rivera | "Night of the Living Guacamole" |
| 90 | "Zebra Donkey" | |
| 89 | Hey Arnold! | "Helga Blabs It All" |
| 88 | The Adventures of Jimmy Neutron: Boy Genius | "Normal Boy" |
| 87 | The X's | "Three Days of the Coin Op" |
| 86 | My Life as a Teenage Robot | "Killgore" |
| 85 | Rocko's Modern Life | "Clean Living" |
| 84 | The Ren & Stimpy Show | "Space Madness" |
| 83 | The X's | "Mock Tutors" |
| 82 | The Adventures of Jimmy Neutron: Boy Genius | "Monster Hunt" |
| 81 | All Grown Up! | "Lucky 13" |
| 80 | The Fairly OddParents | "Chin Up!" |
| 79 | Back at the Barnyard | "Cow's Best Friend" |
| 78 | The Ren & Stimpy Show | "Stimpy's Invention" |
| 77 | "Robin Höek" | |
| 76 | The Angry Beavers | "Beach Beavers A Go Go" |
| 75 | Hey Arnold! | "Full Moon" |
| 74 | Doug | "Doug Can't Dance" |
| 73 | The Angry Beavers | "Muscular Beaver" |
| 72 | The Adventures of Jimmy Neutron: Boy Genius | "Sheen's Brain" |
| 71 | "The N-Men" | |
| 70 | Rugrats | "Susie vs. Angelica" |
| 69 | Tak and the Power of Juju | "Woodiefest" |
| 68 | Rocket Power | "Cinco de Twisto" |
| 67 | Rocko's Modern Life | "Wallaby on Wheels" |
| 66 | El Tigre: The Adventures of Manny Rivera | "The Mustache Kid" |
| 65 | "Miracle City Underground" | |
| 64 | The Adventures of Jimmy Neutron: Boy Genius | "Beach Party Mummy" |
| 63 | Invader Zim | "Attack of the Saucer Morons" |
| 62 | Rocket Power | "Enter the Hawk Trix" |
| 61 | KaBlam! | ? |
| 60 | The Fairly OddParents | "A Wish Too Far" |
| 59 | Rugrats | "Passover |
| 58 | "Naked Tommy" | |
| 57 | Catscratch | "A Wooly Adventure" |
| 56 | Danny Phantom | "Fright Night |
| 55 | The Fairly OddParents | "Most Wanted Wish" |
| 54 | Hey Arnold! | "Married" |
| 53 | Aaahh!!! Real Monsters | "The Switching Hour" |
| 52 | Rugrats | "Angelica Orders Out" |
| 51 | The Fairly OddParents | "Vicky Loses Her Icky" |
| 50 | My Life as a Teenage Robot | "Party Machine" |
| 49 | Tak and the Power of Juju | "The Beast" |
| 48 | SpongeBob SquarePants | "Ugh" |
| 47 | The Fairly OddParents | "Presto Change-O" |
| 46 | SpongeBob SquarePants | "Tea at the Treedome" |
| 45 | "Pressure" | |
| 44 | The Adventures of Jimmy Neutron: Boy Genius | "Operation: Rescue Jet Fusion" |
| 43 | Catscratch | "Zombie Party" |
| 42 | SpongeBob SquarePants | "Plankton!" |
| 41 | The Fairly OddParents | "Chip Off the Old Chip" |
| 40 | My Life as a Teenage Robot | "Fashion Victim" |
| 39 | CatDog | "CatDog's End" |
| 38 | The Fairly OddParents | "Timvisible" |
| 37 | ChalkZone | "The Skrawl" |
| 36 | Invader Zim | "The Nightmare Begins" |
| 35 | Rocko's Modern Life | "Ed Good, Rocko Bad" |
| 34 | Danny Phantom | "Fanning the Flames" |
| 33 | The Fairly OddParents | "The Boy Who Would Be Queen" |
| 32 | The Adventures of Jimmy Neutron: Boy Genius | "Stranded" |
| 31 | Rugrats | "All Growed Up" |
| 30 | KaBlam! | "Your Real Best Friend" |
| 29 | SpongeBob SquarePants | "Help Wanted" |
| 28 | Avatar: The Last Airbender | "The Siege of the North - Part 2" |
| 27 | The Ren & Stimpy Show | ? |
| 26 | Invader Zim | "The Nightmare Begins" (again) |
| 25 | Catscratch | "Scaredy Cat" |
| 24 | Avatar: The Last Airbender | "The Boy in the Iceberg" |
| 23 | The Adventures of Jimmy Neutron: Boy Genius | "My Big Fat Spy Wedding" |
| 22 | The Fairly OddParents | "Action Packed" |
| 21 | "The Same Game" | |
| 20 | The Adventures of Jimmy Neutron: Boy Genius | "Love Potion #976/J" |
| 19 | Back at the Barnyard | "Cowman and Ratboy" |
| 18 | The Adventures of Jimmy Neutron: Boy Genius | "Crouching Jimmy, Hidden Sheen" |
| 17 | SpongeBob SquarePants | "Help Wanted" (again) |
| 16 | The Fairly OddParents | "Timmy the Barbarian" |
| 15 | Avatar: The Last Airbender | "The Blue Spirit" |
| 14 | The Fairly OddParents | "The Good Ol' Days" |
| 13 | SpongeBob SquarePants | "Suds" |
| 12 | Avatar: The Last Airbender | "The Blind Bandit" |
| 11 | El Tigre: The Adventures of Manny Rivera | "La Tigressa" |
| 10 | Danny Phantom | "The Ultimate Enemy" |
| 9 | SpongeBob SquarePants | "Hooky" |
| 8 | "Big Pink Loser" | |
| 7 | Avatar: The Last Airbender | "The Siege of the North - Part 2" (again) |
| 6 | SpongeBob SquarePants | "Ripped Pants" |
| 5 | "Your Shoe's Untied" | |
| 4 | "F.U.N." | |
| 3 | "Bubblestand" | |
| 2 | "Dying for Pie" | |
| 1 | "Band Geeks" |