He has appeared as the lead in films such as "Fat City" and "The Ninth Configuration". He has also performed as a narrator for programs including CNBC'S "American Greed" (2008–) and various educational television programs. Comedic roles include Ken, the father of comedian Christopher Titus in the FOX sitcom "Titus" (2000–2002), and as Sergeant Stedenko in Cheech & Chong's films "Up in Smoke" (1978) and "Nice Dreams" (1981). Keach won a Golden Globe Award and was nominated for a Primetime Emmy Award for the television miniseries "Hemingway" (1988). He is an inductee of the Theatre Hall of Fame and was honored with a star on The Hollywood Walk of Fame in 2019.