A Question of Sport is 1,000 not out and celebrating the landmark episode with some very familiar guests.
Former captains Ally McCoist, Bill Beaumont, John Parrott and Willie Carson are returning to the long-running quiz show for one night only.
They will join regulars Sue Barker, Matt Dawson and Phil Tufnell on BBC One tonight.
The show first aired on January 5, 1970, when it was hosted by David Vine with boxer Henry Cooper and Wales rugby union star Cliff Morgan captaining the teams.
Footballers George Best and Tom Finney joined cricketer Ray Illingworth and athlete Lillian Board on the teams.
Other regulars on the show included long-term host David Coleman and Liverpool and England footballer Emlyn Hughes.
Hughes provided one of the show's most famous moments in 1987 when he mistook a photograph of Princess Anne for a man and was then even more embarrassed when she joined him on the show the week after.