By Lawrence O'Toole
Updated February 04, 1994 at 05:00 AM EST

Bad Behavior, a droll comedy about a house and a marriage falling apart in London, has a chafing and troubling edge. Stephen Rea and Sinead Cusack give fresh performances as marrieds trying to overcome their complacency, fear of financial insecurity, demanding friends, and the confusion of twin contractors. Yes, it’s all very modest but quietly gripping: the latest proof that good things do come in small packages. B