Cartoon Cartoons is a collective name that is used by Cartoon Network for their original series running from 1997 to 2002. The majority of them were produced by Hanna-Barbera and/or Cartoon Network Studios. The concept of Cartoon Cartoons was spearheaded by Fred Seibert, and originated from his animation anthology series, What a Cartoon! (later re-titled to The Cartoon Cartoon Show). Once their popularity had grown, the Cartoon Cartoons were featured on the network's Friday night programming block, Cartoon Cartoon Fridays.
The name was retired by the network in 2003. Since their heyday, re-runs of the Cartoon Cartoons have continued to air on The Cartoon Cartoon Show (2005–2008) and Cartoon Planet (2012–2014).
Cartoon Cartoons first appeared as shorts on animation showcase series What a Cartoon! in 1995, under the name of World Premiere Toons. The series was produced by Hanna-Barbera and Cartoon Network Studios under the direction of Fred Seibert. Seibert had been a guiding force for Nickelodeon (having overseen the creation of Nicktoons shortly prior to his departure) prior to joining Hanna-Barbera and would establish Frederator Studios years later.
Through What a Cartoon!, Cartoon Network was able to assess the potential of certain shorts to serve as pilots for spin-off series and signed contracts with their creators to create ongoing series.Dexter's Laboratory was the most popular short series according to a vote held in 1995, and became the first Cartoon Cartoon in 1996. Three more series based on shorts debuted in 1997: Johnny Bravo, Cow and Chicken, and I Am Weasel (the latter two as segments of the same show; I Am Weasel was later spun off into a separate show). These are followed by The Powerpuff Girls in 1998. The series Ed, Edd n Eddy premiered in 1999. and concluded with Mike, Lu & Og and Courage the Cowardly Dog in 1999, creating a lineup of critically acclaimed shows.