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You can't have an actor where the audience says, aw, that poor, sweet guy. You got to get somebody who's, like, nondescript in a way or just somebody that looks a little like they should get it. So this is all I learned actually learn from Lucy [Ball].

"Fresh Air Remembers Garry Marshall, Creator Of 'Happy Days' And 'Laverne & Shirley'". "Fresh Air" with Terry Gross, www.npr.org. July 20, 2016.
You can't have an actor where the audience says, aw, that poor, sweet guy. You got to get somebody who's, like, nondescript in a way or just somebody that looks a little like they should get it. So this is all I learned