Terry Wogan introduces a brand new quiz show, where he reads out sentences with a vital word missing - the "blankety blank" of the title. If contestants give the same answer as a panel of celebrities, they can go on to win prizes.
Beryl Reid makes her first of 26 appearances on the quiz, and sets up a long-running joke between herself and Terry: the idea that there's a man under her desk, not only taking her used question cards, but making sure she's "entertained".
Terry Wogan hosts the fourth edition of the quiz, with three celebrity guests brand new to the programme: Brian Murphy, Jon Pertwee and Isla St. Clair.
Guest panellist Michael Barrymore becomes entranced by the eccentricity of Margaret Powell, while Bernie Winters questions Kate O'Mara's inability to get a single answer right
Regulars Lorraine Chase and Patrick Moore are joined by newcomers Paul Daniels and Anna Dawson, plus the sole appearances of Derek Griffiths and Peggy Mount. One thing they share is love of teasing Terry, including pretending to be asleep.
In a low-scoring game where even the winning contestants get hardly any points, the "Taxi Driver Of The Year 1979" challenges Peter Jones to earn his fee.
The first appearance on the panel of David Jason, Ted Moult, Alfred Marks and Janet Brown. It's also the debut of Terry's Columbo impression - but will he keep it together when impersonating Marcus Welby's nurse?
Marti Caine makes her only appearance on the show, but Terry is in a dominant mood, threatening to lock the audience in, reminding the panellists that he can punch his weight, and telling Jerry Stevens that "I'll smash you in the mouth".
Lorraine Chase argues for the benefits of phonetic English, noting that "whoever first discovers the word does it all wrong". Plus, Humphrey Lyttelton makes his sole appearance, Terry complaining "I said it was a mistake having him on".
Mollie Sugden and Dilys Watling make their first guest spots on the panel, while Alexandra Bastedo and Peter Bull make their sole appearances. Meanwhile, Paul Daniels has some surprises for Terry.
The celebrity panellists have so much trouble matching any correct answers with the contestants that they turn to cheating to try and get some points. Lennie Bennett gets away with it - but for how long?
The first episode to feature seven panellists, as Keith Harris is joined by Orville. However, Terry is more dismayed by the series of wrong answers, noting "I always start this show sprightly as a button, and I end up on me knees."
Terry contends with the emergence of the STWW - Stop Terry Wogan Working - revolts from the studio audience, and contestants offering to sell him their prizes.
A chaotic, chart-topping series finale that sees Terry declare "I've got a terrible feeling that this is going to be one of those shows". Half of the celebrities come armed with props, with getting correct answers the last thing in mind.
Terry returns with a second series of Blankety Blank, just four months after the end of the first. Among the celebrity guests he welcomes to the show are newcomers Patricia Brake and David Jacobs.
Little and Large and Aimi MacDonald make their first appearances on the panel, but when Aimi can't understand any of the questions, Terry wonders if he should start the show again.
Roy Kinnear and Julia McKenzie make their debut on the panel, while Percy Edwards makes his sole appearance. Meanwhile, Paul Daniels has some secrets in store for Terry.
A chaotic show, where Terry must deal with barbs, interruptions, a surprise visit from a rival quiz show host, and a contestant who doesn't want the prizes.
The debut of Katie Boyle and Kenny Everett on Blankety Blank. Although Kenny ends the show by claiming he'll never be back, he became a regular guest on the series.
The first appearance of regulars Larry Grayson and Barbara Windsor, plus the sole guest spot for Moira Lister. Terry claims that Larry is being "cocky", while one of Barbara's answers has to be censored for the viewers at home.
Terry promises that this week it'll be "the iron hand in the velvet glove", as he orders panellists to be quiet and tells off contestants for answering back. But how long can he can keep the discipline going?
Terry is greeted by one contestant with the name "Hazel Hazel", and another who wants to give him a present. In the meantime, Paul Daniels pledges to be "sophisticated", while Barbara Kelly questions his claim that he had a father.
Henry Cooper makes his panel debut, while Dora Bryan and Françoise Pascal put in their sole appearances. But with Larry Grayson and Aimi MacDonald causing chaos, Terry can feel one of his headaches coming on.
Terry has a lot to contend with, as he takes his usual abuse from the likes of David Hamilton and Lennie Bennett - but also a Cornish contestant, who pans his recording of "The Floral Dance".
Arthur Askey makes his debut on the panel, while Terry Hall and Lenny the Lion make their sole appearance. Wogan, meanwhile, is in a dominant mood. "You're not going to get on my nerves tonight, are you?" asks Beryl Reid.
Pat Coombs and Cuddles the Monkey make their debut on the panel, while Beryl Reid is in an uncontrollable mood. "All this is gonna end in tears", warns Terry.
Terry introduces Blankety Blank's first-ever Christmas special. Featuring two sets of contestants, snowball fights and flights through the air, the sharp-eyed may also spot Peter Davison in the audience.