La maggior parte dei cortometraggi sono stati trasmessi in blocchi di mezz'ora o un'ora, di solito separati in base ai personaggi e allo studio d'animazione. Quando fu lanciato nel , il canale trasmetteva solo in sistemi via cavo, tuttavia beneficiando di un'offerta speciale. Le elevate valutazioni di Cartoon Network nel corso degli anni seguenti hanno portato ad un numero maggiore di sistemi via cavo che includevano la rete. Lo stile di umorismo e i contenuti sessuali di parodie quali A Day in the Life of Ranger Smith e Boo Boo Runs erano piuttosto fuori luogo rispetto al resto delle serie di Cartoon Network, infatti la rete raramente trovava un posto per loro nella sua programmazione.
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In numerous interviews, it had been stated that at the time, one third of Cartoon Network's audience were adults. Space Ghost Coast to Coast , Cartoon Network's first foray into original programming, was created in specifically for late night adult audiences. She stated there was a new programming block coming out in September that was aimed for an adult audience. The screening was part of the Toyota Comedy Festival. Harvey Birdman, Attorney at Law was the winner and the pilot was screened. Sedelmaier talked about working on the Harvey Birdman, Attorney at Law pilot.
Premiered January 7, , replacing Mobile Suit Gundam: Guardian of the Spirit — Premiered Saturday, August 23, Naruto —14 Premiered December 2, , on Toonami. Only the first uncut 52 episodes were aired during the program's first run on Adult Swim. After episode 52's premiere in November , reruns of seasons 1 and 2 continued to air until September 6,
On October 13, , Toonami was shortened from 4 hours to just 2 hours, airing from PM. Cancellation On Saturday morning, September 20, , at the Anime Weekend Atlanta convention in Atlanta, Georgia, Cartoon Network announced that they had canceled the Toonami block due to low ratings. Toonami then aired its final transmission that same evening. Employees who worked on the block moved to other parts of the Cartoon Network or Adult Swim.