Conversation so far:
When was the start of Don Knott's later years?
In 1986, Don Knotts reunited with Andy Griffith in the made-for-television film Return to Mayberry
What did Don Knotts do in the Return to Mayberry film?
Don Knotts reprised his Barney Fife role in the Return to Mayberry film?
How did the Return to Mayberry film turn out?
Although Return to Mayberry was a ratings success, its critical reception was mixed
Are there any other interesting aspects about this article on Don Knott's besides his later career and the Return to Mayberry film?
TV writer Mark Evanier called him the most beloved person in all of show business.“

Question: How did he do with the show?
Self-contained rewrite: What did Don Knotts do on the show What a Country!?