Oscar and Emmy-nominated actor Dean Stockwell, famous for his role on Quantum Leap has died aged 85.
He had a career in film, TV and theatre that lasted more than 70 years.
A family spokesman said Mr Stockwell had died at home of natural causes, reports Wales Online.
As a child actor under contract to Metro-Goldwyn-Mayer, he first came to the public's attention in films such as Anchors Aweigh (1945), The Green Years (1946), Gentleman's Agreement (1947), and Kim (1950).
As a young adult, he played a lead role in the 1957 Broadway and 1959 screen adaptations of Compulsion and in 1962, Stockwell played Edmund Tyrone in the film version of Long Day's Journey into Night, for which he won a Best Actor award at the Cannes Film Festival.
Read more: The cruel words from a careers advisor that spurred on top Greater Manchester cop
He appeared in supporting roles in such films as Dune (1984), Paris, Texas (1984), To Live and Die in L.A. (1985), Blue Velvet (1986), and Beverly Hills Cop II (1987).
He received further critical acclaim for his performance in Married to the Mob (1988), for which he was nominated for the Academy Award for Best Supporting Actor. He subsequently had roles in The Player (1992), and Air Force One (1997).
His television roles include playing Rear Admiral Albert "Al" Calavicci in Quantum Leap (1989–1993) and Brother Cavil in the Sci Fi Channel revival of Battlestar Galactica (2004–2009). Following his roles on Quantum Leap and Battlestar Galactica, Stockwell appeared at numerous science fiction conventions.
Actress Lydia Cornell, best known for her role as Sara Rush on the ABC sitcom Too Close for Comfort, lead tributes on Twitter.
She posted: "Rest in Peace Dean Stockwell. Sparkling heart What an amazing actor.
"He always had a mischevious glint of humor in his eyes. I was honored to work with him in the pilot for "Quantum Leap" at @NBCUniversal along with Scott Bakula. #deanstockwell"
American Journalist and filmmaker Bilge Ebiri posted: "R.I.P. Dean Stockwell, a great actor who never met a scene he couldn’t steal."
And public health scientist Eric Feigl-Ding tweeted: "I grew up on Quantum Leap. Also loved him in the movie Air Force One. #DeanStockwell will be missed."
