Andy didn't act, he was being is natural self. No wonder he was always smiling, doing himself, and being paid well. Andy was suppose to be the silly ass in Andy of Mayberry show, but Don Knotts took over being the silly bugger, so Andy went through it being the straight man. Don Knotts was one of most comical people I can ever remember seeing. I can still break out laughing looking at the silly bugger. Can you imagine the out takes, or take outs(boners) there must have been while filming that, and the entire crew rolling on the ground?
Yes, TV has come along way. It is about as ridiculously bad as bad can get! Hate to say it, at only 63, "Those were the days".
Go to You Tube and entertain yourself with some Andy and Barny Fife. It's worth it,