US actor Len Lesser, best known for his role as Uncle Leo on sitcom Seinfeld, has died aged 88 from cancer-related pneumonia in Los Angeles.
"Heaven got a great comedian and actor today," his daughter Michele said in a statement released on Wednesday.
Lesser played Jerry Seinfeld's scene-stealing uncle in the show, always greeting him with: "Jerry, hello!"
He also had a recurring role on TV show Everybody Loves Raymond, as a friend of the lead character's father.
The New Yorker's extensive list of TV credits included appearances in Get Smart, The Munsters, The Rockford Files and ER.
He was also seen in the prison movies Birdman of Alcatraz and Papillon and in Clint Eastwood's films Kelly's Heroes and The Outlaw Josey Wales.
His last appearance was as a neighbour in a 2009 episode of TV series Castle.
A friend told the Reuters news agency the actor died peacefully at a rehabilitation centre in Burbank where he had been staying for several weeks.