By Terry Kelleher
August 25, 1997 12:00 PM

PBS (Thurs., Aug. 28, 8 p.m. ET)


This leisurely documentary tracks so-called Geritol gypsies, retirees who wander America in vintage trailers. Filmmaker Ellen Spiro, an RVer herself, has a special affinity for these vagabonds. Her efforts are supported by the sage narration of her dog Sam (since deceased), who had ghostwriting help from novelist Allan Gurganus. In case the RV life doesn’t seem unfettered enough, we also meet a 66-year-old woman who’s walking across the country.