Useful Notes / Block Programming

The arrangement of television and radio programs so that similar types of programs will air in succession. TV channels and radio stations tend to do this with the hope that it will keep viewers interested and stay tuned to the station for a longer period of time rather than leave after just one show. This is quite popular in cable TV, where they can arrange reruns into blocks to fill daytime slots where there aren’t so many viewers watching. Some blocks have become so popular that they got their own channel.

Block programming is not so common on commercial radio now as it was in the past. Many stations now stick to a format, often one specific type of music or specific type of talk radio, which listeners can expect when tuning in to that station. Having different blocks of programming rather than sticking to a general format could alienate listeners who often only listen to radio for only a couple of hours a day. Some public radio and multicultural stations still use block programming, though even this is declining due to competition for donations.

Compare Kids Block for blocks that focus on child-friendly programming.


  • 4Kids TV: Aired on Saturday mornings on Fox which began as Fox Box in 2002 and changed its named in 2005. Its programming consisted of imported shows like dubbed anime (Pokémon, Yu-Gi-Oh! and One Piece) and non-Japanese shows (Winx Club from Italy, Cubix from South Korea and The Adrenaline Project from Canada), as well as more original animated programming like Teenage Mutant Ninja Turtles and Chaotic. The changes made with the anime dubs have been quite controversial with anime fans. Conflicts between 4Kids Entertainment and Fox caused the block to end in 2008, though much of its programming moved to the CW4Kids block.
  • [adult swim]: Beginning in 2001, this block airs on Cartoon Network. It has been primarily dedicated to adult animation shows, though some live-action programs have aired on this block, from 8 p.m. to 6 a.m. Eastern time.
  • The Disney Afternoon: Began in 1990, this was an block of made for syndication animated programs that aired in the afternoon from 3 p.m. to 5 p.m.. The block contained four 30-minute animated programs that was accompanied with unique segments and "wrappers" around those shows and was distributed by Buena Vista Television. The block ended in 1997 and was replaced with a 90-minute block that did not contain any official name but still featured disney programming.
  • The CW 4Kids, later Toonzai: Began in 2008, taking over from Kids WB. It changed its named to Toonzai in 2010 after entering a joint venture with Saban Brands. The Block originally carried programs from Kids WB and 4Kids TV, which ended near the end of 2008, but dropped most of the WB programming once Saban was got involved and from that point aired similar programming that 4Kids TV aired. Saban bought out the block in 2012, when 4Kids entertainment faced bankruptcy due to a Yu-Gi-Oh–related lawsuit, and the U.S. rights to Yu-Gi-Oh. Saban than replaced the block shorty after with Vortexx.
  • Fox Kids: Ran from 1990 to 2002 and aired on Fox during weekday afternoons and Saturday mornings. The block saw a mix of animated programs including those from Warner Bros. and Marvel in addition to a couple of live action programs like Power Rangers and the short-lived Galidor. Was replaced in 2002 by "Fox Box", which was renamed 4Kids TV in 2005, after Fox Kids' parent, Fox Family Worldwide, was bought by The Walt Disney Company.
  • Kids' WB!: Ran from 1995 to 2006 and focused on child-related programs. It was replaced by The CW 4 Kids.
  • Marvel Universe: Began in 2012, this block airs on Disney XD and consists of animated programs produced by Marvel Animation. It runs on Sundays 8 a.m. to 11 a.m. Eastern Time.
  • Nick Studio 10: A short-lived afternoon block on Nickelodeon that ran from February 18 to June 17, 2013. The hosts would air skits and viral during commercial breaks and for a time interrupted the main programming though this was reduced due to viewer complaints. The block went on hiatus for the summer season and has not returned since, leaving the afternoon programs unhosted.
  • PBS Kids: This block serves as a brand for most of the children based Edutainment Show programs on PBS. Launched in 1994 as PTV, it changed its name to PBS kids in 1999 and still runs today. Also had a sister block called PBS Kids Go! that launched in 2004 to focus on similar programming for 6- to 8-year-old children, a slightly older intended audience than the original block. PBS Kids Go! was discontinued in 2013.
  • Teen NICK: Started out as programming block in 2000 that aired on Nickelodeon during Sunday evenings. It had a focus on teen-oriented programming. The block was discontinued in 2008 but exists today as its own TV channel.
  • Teletoon at Night: Late-night block on the Canadian channel Teletoon. Programming is rather similar to Adult Swim's format in terms of programming, mostly adult animated shows, and airs every night. A French-language version of the block "Télétoon la suit" airs on Teletoon's French-language channel.
  • Vortexx: Saturday -orning cartoon block that replaced CW 4 Kids in 2012. In addition to a few of the programs that 4Kids used to air, the block also featured a number of action related cartoons as well as WWE Saturday Morning Slam. It was discontinued in 2014 in favour of Litton Entertainment's One Magnificent Morning. The end of Vortexx marked the end of the last Saturday-morning block featuring non-educational programming aimed at kids.