Do Not Adjust Your Set (DNAYS) is a British television series produced originally by Rediffusion, London, then, by the fledgling Thames Television for British commercial television channel ITV from 26 December 1967 to 14 May 1969. The show took its name from the message (frequently seen on the TV screen in those days) which was displayed when there was a problem with transmission.
It helped launch the careers of Denise Coffey, David Jason, Eric Idle, Terry Jones and Michael Palin; the last three became members of the Monty Python comedy troupe soon afterward. Although originally conceived as a children's programme, it quickly acquired a fandom amongst adults, including future Python members John Cleese and Graham Chapman.
The Bonzo Dog Doo-Dah Band, a satirical comedy/art/pop group, also performed songs in each programme and frequently appeared as extras in sketches. The programme itself comprised a series of satirical sketches, often presented in a surreal, absurd and discontinuous style – anticipating Monty Python's Flying Circus, which began five months after the last episode of DNAYS. Strange animations between sketches were crafted for the final episodes by Terry Gilliam, who soon graduated to Python with Palin, Jones and Idle – part of Gilliam's "Christmas cards" animation reappeared there in the "Joy to the World" segment.
One recurring feature of the show was Captain Fantastic, a superhero parody featuring David Jason in farcical and morbid adventures against villainess Mrs. Black (Coffey). These segments were shot entirely on location in London. The feature was so popular with the young audience that after DNAYS itself ended, Captain Fantastic briefly continued in its own capacity.
In 1968, DNAYS won an international award, the Prix Jeunesse, in Munich.
Short comedy sketches were performed by an ensemble cast accompanied by Bonzo Dog Doo-Dah Band, an eccentric English group featuring the late Neil Innes, was fronted by the late Vivian Stanshall.