Kevin McCarthy played Mark Twain in The Shattered Idol ― Suspicion as Winslow Quince the eccentric man Lucas & Mark ran into who was stranded with a broken wheel.

He later appeared with Chuck in Once Upon a Texas Train, he played the Governor.

He earned an Academy Award nomination for Best Supporting Actor in Death of a Salesman.
He has performed his one-man show Give 'em Hell, Harry (as Harry S. Truman) for over 20 years, and has played the role in every state but Alaska and South Dakota. In addition, he won an Obie award for playing President Truman in another play, Harry Outside in 1975.

Kevin has done many of things but I would say, besides The Rifleman the one movie I remember him best for is Invasion of the Body Snatchers.

Kevin has appeared in nearly 100 movies in a career that has spanned seven decades.

Be sure and check out Kevin McCarthy's Official Website

Kevin McCarthy was born in Seattle, Washington on February 15, 1914
He died September 11, 2010 in Hyannis, Massachusetts