However, I soon realised that in conflict zones or developing countries, one-off programmes run by Internews or other media NGOs could work well in the short term, but ultimately had no legs on their own.
Ross will be one of the guests on the new 20-part show, as will Noel Gallagher, who joined Brand for a one-off programme on TalkSport last year.
Broadcaster Nick Ross will be presenting an exclusive, special one-off programme on Radio Devon and Radio Cornwall to examine the impact of the cuts in public spending in the South West.
Pig-farming will come under scrutiny in the UK next month when Channel 4 screens a one-off programme by Jamie Oliver.
Seven Up! first hit the screens in May 1964, and was intended as a one-off programme, a snapshot of the British class system and the way it conditioned so much of life.
Channel 4 decided to broadcast the Hollyoaks scenes as planned, and released a statement which explained: We feel it is appropriate to continue with the transmission of these episodes as this is not a one-off programme but an established and long-running series.
A one-off broadcast by Josh White while he was visiting Britain in 1951 was so popular that he was asked to perform for a series of programmes for the BBC, eventually titled The Glory Road and broadcast in 1952.
In the same year, Barrowman made two television appearances on New Year's Eve: He talked about spirituality and civil partnerships on BBC Television's Heaven & Earth, hosted by Gloria Hunniford, and he appeared as a guest on Graham Norton's one-off BBC Television programme, The Big Finish, teaming up with Craig Revel Horwood and Louis Walsh to take a lighthearted look at news stories in 2006.
Independent documentaries released in this way are now more powerful than one-off television programmes.
The effects of one-off educational programmes may dissipate in subsequent years if not reinforced and more evidence is needed for the long-term benefits 15; however, the results of lifestyle interventions in the short term are thought to be cost-effective 16.
"The activists were shut out and it turned into a one-off public programme that was never repeated".
