Famed [[LongRunners long-running]] British programme where people get their valuables appraised. Starting with a 1977 documentary, the show proper has been running since 1979, going from town to town in Britain (and Canada and Australia) having appraisers tell people just what treasures they have and how much they're worth (which usually eclipses those people's expectations).

The show has spawned many international versions, including an extremely successful American version which debuted on Creator/{{PBS}} in 1997. (PBS also shows the British version in some locales.)
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!!This show provides examples of:
* AffectionateParody: The show's format makes it easy to be parodied, and several commercials have popped up in the U.S. parodying the Roadshow.
* BigFancyHouse: One of the main settings for roadshows, along with museums and civic halls.
* ContinuityNod: Previous "finds" are often referenced and sometimes an item which appeared twenty or even thirty years ago will turn up again.
* CoolOldGuy: Henry Sandon. His popularity with ''Roadshow'' visitors is legendary - many of the people who work on the show have attested to the fact that he's the one everybody wants to meet, even if they've brought in something unrelated to his specialism (which is ceramics).
* CrossOver: One episode of ''{{Frasier}}'' featured the Craines appearing on the show.
* TheHost: Many.
** British: Bruce Parker (1977; 1979), Angela Rippon (1979), Arthur Negus (1977; 1979-83), Hugh Scully (1981-2000), Michael Aspel (2000-07), Fiona Bruce (2008-).
** American: Chris Jussel (19972000), Dan Elias (200103), Lara Spencer (200405), [[RussianRoulette Mark L. Walberg]] (2005-).
* LongRunners: British version since 1977; American version since 1997.
* LoadsAndLoadsOfCharacters: There are dozens of regular and semi-regular experts. At least now they actually get name captions, but even avid viewers would still be hard-pressed to name them all.
* NamesTheSame: Creator/MarkWahlberg does not host the American edition.
* ResultsNotTypical: Thousands of people bring antiques to the Roadshows, but only those select few with extremely valuable or unusual antiques will be featured.
** For some time they actually did show the people who brought in what they thought were valuable antiques only to find out it was worthless junk because it was popular with viewers. They put a stop to it because they thought PBS should aspire to higher standards.
** Although, there will still be the occasional story of someone who brought in something that would have been valuable, but it had been cleaned or restored badly, and was only worth a fraction of what it would have been. They do, however, show a few people at the end who have brought in things that were worth almost nothing. They usually don't mind, saying that it was valuable to them anyway. This also has the beneficial effect of educating owners in the proper care of their antiques, preventing damage that would otherwise reduce or even eliminate their value.
* WorthlessYellowRocks: What the previous owner of many of the antiques thought they were.
** GrailInTheGarbage
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