From the BBC:
John Sullivan, who wrote one of the best-loved British sitcoms, Only Fools and Horses, has died at the age of 64.
He had been in intensive care for six weeks at a hospital in Surrey, battling viral pneumonia.
He also wrote Citizen Smith and Just Good Friends, and the third and final episode of his latest work Rock & Chips will be shown on BBC One on Thursday.
Sir David Jason, who played Del Boy in Only Fools and Horses, said he was "devastated" at the loss of his friend.
He said: "We have lost our country's greatest comedy writer but he leaves us a great legacy, the gift of laughter. My thoughts at this time are with his lovely family."
BBC director general Mark Thompson said: "John had a unique gift for turning everyday life and characters we all know into unforgettable comedy."
The son of a plumber, he is survived by his wife Sharon and two sons, a daughter and two grandchildren.
Incidentally, I did an image search for a photo of John, and the best one I could find, that you see above, was on the website of Birmingham record shop Reddington's Rare Records. I used to work there, when I was 17. Turns out it closed down. RIP.