Crimewatch UK
"They put up this bloke's picture on Crimewatch UK with a phone number and said 'Have you seen this man?' Well my auntie rang them up and said '...No'."
This is the UK version of the German show Aktenzeichen XY ? ungelöst (File XY... Unsolved), which enters the Multinational Shows grouping because it has multiple foreign versions, including America's Most Wanted.
Started in 1984 as a one-off experiment, it's been so successful it's been going monthly for 28 years.
This is a show that tries to solve unsolved crimes. It uses dramatic reconstructions, CCTV footage and photo-fits to try and jog people's memory. The public can and do call in with information to the police -- about a third of the crimes covered on there are solved, some of which have been pretty famous ones.
Its saddest moment was the murder of Jill Dando, one of its own presenters.
It's got a few fictional imitators over the years as well.
One of its presenters, Nick Ross (whose Catch Phrase for this show ends the article) left in 2007.
"Don't have nightmares, do sleep well."