In the partially animated 1964 film "The Incredible Mr. Limpet," Knotts played a clerk who turns into a fish after he is rejected by the Navy. When it was announced in 1998 that Jim Carrey would star in a "Limpet" remake, Knotts stated "I'm just flattered that someone of Carrey's caliber is remaking something I did." Knotts did not comment on the low road Carrey's humor frequently takes, although it was no doubt on his mind. As always, Knotts was a class act.
He was 81. Thank you Don, for all of the laughter. May you have a full cylinder, as well as your own set of keys in heaven.