Fans of Keith Chegwin are remembering his appearance on Ricky Gervais' TV show Extras.
The actor and comedian has died at the age of 60 following a long illness, his family has said.
The star, best known for his roles on children's TV shows Swap Shop and Cheggers Plays Pop, died at home after battling a progressive lung condition.
In tribute today, Ricky Gervais described Mr Chegwin as a "national treasure".
So sad to hear about the death of the lovely & funny Keith Chegwin.— Ricky Gervais (@rickygervais) December 11, 2017
RIP you National Treasure. #PopKnobInFanny
In particular, people are pointing to a series of bloopers from the BBC show in which both actors 'corpsed' throughout filming.
'Corpsing' is theatrical slang for unintentionally breaking character by laughing.
Keith Chegwin's performance in extras is absolutely one of my favourite parts of any comedy ever. Solid gold on twitter too.— craig reynolds (@reynlord) December 11, 2017
"I've just done the most unprofessional job in my entire career. I've done nothing but laugh through the whole day," Mr Chegwin said of his performance.
In this famous clip, however, it was Ricky Gervais who was suffering from uncontrollable laughter in response to his co-star's performance.
Have a look at the (explicit) clip here: