Dr Christian Jessen is to test the medical credibility of 'gay cures' in a one-off Channel 4 documentary.
One of the most extraordinary, in 2006, was Chris in Scars, a low-budget one-off Channel 4 film in which Isaacs played a real-life violent offender.
One is the on-off channels and the other is packet loss network.
So you're watching Ferris Bueller's Day Off on one channel, and wouldn't you know it, Glory is airing two hours from now on another channel.
His latest film, a one-off drama for Channel 4, was five years in the making.
The comedy grew from a one-off pilot in Channel 4's 2012 Funny Fortnight series, and included such details as recreating the 1950-1990s bohemian drinking club, The Colony Rooms, as a setting for some louche scenes.
At the end of 1985, Thompson wrote and starred in her own one-off special for Channel 4, Emma Thompson: Up for Grabs.
In the past, if there was nothing they liked on any of their favourite channels, viewers had four options: watch the "least bad" programme on one of those channels; search the other channels for something better; watch a video cassette or DVD; or switch off the TV.
Episodes once done in 13 weeks are now being produced in 11, while timely one-offs like the Weather Channel's Sandy: Anatomy of a Superstorm, are thrown together in a matter of days.
Garfield won a Best Actor Bafta for Boy A (2007), an intense one-off film drama for Channel 4 about the rehabilitation of a criminal, based on the novel by Jonathan Trigell.
This one-off film launched the channel's Defying the Label season, which aims to "explore what it's like to live with a disability in the UK today", and it did so with a kind of delicate ease that slipped new truths in unnoticed.
