Conversation so far:
What show did Don Knotts star in?
Andy Griffith was offered the opportunity to headline his own sitcom, The Andy Griffith Show.
When did the show run for?
1960-1968.
How did knotts fit into the show?
Knotts took the role of Barney Fife, the deputy--and originally cousin--of Sheriff Andy Taylor (portrayed by Griffith.
Did he win awards for the show?
Knotts's portrayal of the deputy on the popular show earned him five Emmy Awards for Best Supporting Actor in a Television Comedy.
What did he win the awards?
three awards for the first five seasons that he played the character.
What did people say about his character?
A summary of the show from the website of the Museum of Broadcast Communications describes Deputy Barney Fife.
What did they say about him?
important, romantic, and nearly always wrong, Barney dreamed of the day he could use the one bullet Andy had issued to him.

Question: What did he do?
Self-contained rewrite: What did Barney do?