05/15/1995 at 01:00 AM EDT
WE ARE NOW IN THE SHANK OF MAY Sweeps. Enjoy the programming bounty while you can. In two weeks we enter an unusually arid summer. The networks have abandoned their five-year effort to tantalize viewers during the hot season with a sprinkling of new shows. It's easy to understand why they are retreating to reruns: the last summer series to carve out an audience was Northern Exposure in 1990. If you are a habitual TV watcher, this may be a good time to take up pottery or golf or some other time-consuming hobby, because the networks' attitude this summer is: "Let them eat leftovers."