Forster had a movie career spanning more than 50 years.
After a string of one-offs on shows such as Police Story, Magnum, P.I. and Walker, Texas Ranger, Forster landed the plum role of bail bondsman Max Cherry in Quentin Tarantino's Jackie Brown, for which he earned an Oscar nod for Best Actor in a Supporting Role.
Forster's career began in the mid-Sixties, with his first film role being Reflections in a Golden Eye (1967), where he appeared opposite Marlon Brando and Elizabeth Taylor. "A lovely man and a consummate actor", and he recalled meeting Forster on the movie "Alligator" almost four decades ago.
Forster also appeared recently in the "Twin Peaks" revival and the "Breaking Bad" spinoff film "El Camino", which debuted on Netflix on Friday.
"I never forgot how kind and generous he was to a young kid just starting out in Hollywood", Cranston wrote.
Six months later, Tarantino would present him the script for Jackie Brown in the very same establishment. He followed that with the lead role in 1969's Medium Cool, Haskell Wexler's cinéma vérité-style narrative built around the real-life riots at the 1968 Democratic National Convention.
"And that's when I realised I was going to get another shot at a career", Forster said.
Forster is survived by his four children, four grandchildren and Grayson, his partner of 16 years.