Don Knotts

Remembering Jesse Donald "Don" Knotts (July 21, 1924 – February 24, 2006).
Some fun facts for ya: In 1996, TV Guide ranked him number 27 on its 50 Greatest TV Stars of All Time list.
 Knotts is a sixth cousin of Ron Howard, a co-star on the Andy Griffith Show.
An urban legend claims that Knotts served in the United States Marine Corps during World War II, serving as a drill instructor at Parris Island. In reality, Knotts enlisted in the United States Army after graduating from Morgantown High School and spent most of his service entertaining troops.

Don Knotts as The Incredible Mr. Limpet