 There is a running gag regarding the Taylors neighbor, Wilson; his  face is always concealed from about the nose down. In most episodes,  Wilson was being shot from behind a fence, but in later episodes  where he got out more often, camera shots, actor movements, and prop  placements were carefully orchestrated so that his full face was not  revealed. In fact, during all the curtain calls for the show (except  the series finale curtain call, where his entire face was shown),  actor Earl Hindman (qv), who played Wilson, would bring a  miniature picket fence to hold in front of his face so that it would  remain hidden from view.