The sharp wit of playwright Gary Ray Stapp's dialogue goes a long way to overcome the occasional humorless spots in the Richmond Hill Barn Theatre's production of Love Thy Neighbor. And when the cast is delivering Stapp's most amusing banter, director Eugenia Giebel's presentation titillates sometimes to the point of tears, particularly as Jan Golz's self-important, riff-raff-hating busybody Leona Crump squares off against Diane Greenwood's dolled-up, somewhat pompous Tupperware and Avon saleswoman Ava. The two create sparks of entertaining disdain for each other, and best suggest the overall tone Stapp apparently intended for his play.