Ripe for mischief, Britain's oldest (if not wisest) adolescents have been delighting television audiences around the world since 1973, making this the longest-running sitcom in the world. Each new series soars high in the ratings as the incor rigible senior citizens uncork a barrelful of laughs with all kinds of (gray) hair-brained schemes. The series is set in a picturesque village in the Yorkshire Dales, oneof the most beautiful parts of England. If Compo, Blamire and Clegg did not live there, it would be a quiet backwater, but their comic capers ensure that there is never a dull moment. Well into their second childhood, they fill their time with cycling, canoeing, or whatever daft idea comes into their heads. And for Compo, there's his ever-present obsession with the wrinkly-stockinged Nora Batty. Sometimes they just sit in the caf#, annoying the proprietors, Sid and Ivy. More often than not, they are gallivanting through the village and across the Dales, giggling with glee, falling in streams, and behaving worse than a gang of seven-year-olds bunking off school for the day. When Blamire leaves the village to woo a widow, Corporal Foggy Dewhurst takes his place, delighting Compo and Clegg with his insane schemes. And when he departs for pastures new, along comes Seymour -a lunatic inventor whose ideas keep Compo and Clegg in stitches.