In the summer of 1969, HEE HAW moseyed into the CBS time slot occupied by The Smothers Brothers Comedy Hour. Conceived as a rural alternative to Rowan & Martin's Laugh-In, the show ranked in the top 20 nationally when CBS pulled the plug in 1971. But co-hosts Buck Owens and Roy Clark, along with the whole Kornfield Kountry gang, sang and joked on in syndication. In 1978, they grinned at the critics in a two-hour 10th-Anniversary shindig, which was videotaped with an audience of invited guests an...