Toonattik was the flagship children's strand of the British breakfast television station, GMTV (known on-air as CITV at weekends), which ran from 5 February 2005 to 26 December 2010.

Toonattik launched on 5 February 2005 as the new children's weekend morning slot on GMTV, featuring a mix of imported cartoons for ages 4–12.

Four months later, when Toonattik was revamped, each week Rickers and Williamson would lead teams of boys and girls in a battle of the sexes, playing various games to earn as much points as they could, a format later adopted by Holly and Stephen's Saturday Showdown in 2006.

A new Toonattik website was created by 4T2 and launched in late January 2006, allowing viewers to play virtual versions of their favourite "Toonattik Twizzler" games, as well as send emails to Rickers and Williamson, read about their favourite cartoons and unlock bonus content by entering a secret code word revealed at the end of each show.

On 12 March 2006, ITV began simulcasting Toonattik on the CITV Channel, allowing younger Sky Digital, Virgin Media and Freeview viewers to access the show through the children's section of the EPG for the first time.

From 15 May to 26 December 2010, the programme was hosted by the animated characters named the "Toonteam" (Bizzle, Hobson, Cocker3, Donk, Pat, Ni-No, Brian and Poop Dog), in place of Rickers and Williamson.