ABC (Wednesdays, 9:30 P.M. ET)
Marooned in this mediocre sitcom are two fine TV actors, Bess Armstrong and Jay Thomas. They play one couple living in a New York City brownstone. Downstairs are the old folks (Barbara Montgomery and Ray Aranha). Upstairs are the newlyweds (Chris Young and Megan Gallivan). Sadly, the plotting and dialogue cohabit a dim, cobwebbed basement.