Cartoon Cartoons is a collective name for Cartoon Network original series. These cartoons were originally produced by Hanna-Barbera and Cartoon Network Studios, but over the years, studios like a.k.a. Cartoon, Kino Films, Stretch Films, Blanky Blook and Curious Pictures produced these series for Cartoon Network. Any and all Cartoon Cartoons have been featured as a part of Cartoon Network's Friday night programming block, Cartoon Cartoon Fridays.
In 2003, Cartoon Network stopped using the Cartoon Cartoon moniker for its original animation. Many original animated series that have premiered from 2003 until present have aired on the Friday night block (now called just Fridays), but are not officially called Cartoon Cartoons. Additionally, in the United Kingdom Cartoon Network and Cartoon Network TOO have late night Cartoon Cartoons programming blocks containing most of the productions made in the 1990s along with Foster's Home For Imaginary Friends.
In late 2008, the spin-off Cartoon Cartoon Top 5 aired only on week-ends in a very early time-slot (6AM-7AM), and received no promotion, other then from the website's "Mini-site". Shortly after, Cartoon Cartoon Top 5's time-slot was replaced with Transformers Animated, and removed from Cartoon Network's programing and website. Cartoon Cartoons were first showcased as World Premiere Toons and later in 1995 on The What a Cartoon!Show, a series of comedic animated shorts produced by Hanna-Barbera Productions guided by Fred Seibert, who founded the Nickelodeon-based Frederator Studios years later.
The first series to spin off from What-A-Cartoon!was Dexter's Laboratory in 1996. A year later, Johnny Bravo and Cow and Chicken joined Dexter on the Cartoon Network lineup.
The Powerpuff Girls became a Cartoon Cartoon in the fall of 1998. Ed, Edd n Eddy came later as the first Cartoon Cartoons series not to be introduced in a What-A-Cartoon!short.
More shows premiered bearing the Cartoon Cartoons brand, airing throughout the network's schedule and prominently on Cartoon Cartoon Fridays, which became the marquee night for premieres of new episodes and new shows.