What's on TV? Thursday, August 21, 1969

I n Saturday's write-up, I spent some time on the late-night talk show wars, now fully joined with the addition of Merv Griffin to the continuing battle between Johnny Carson and Joey Bishop. We've got a second sighting of Merv tonight, with an appearance on WCCO at 7:00 p.m.; since Arthur Treacher, Merv's sidekick, is on the show, it looks like an episode of his old syndicated show. Doesn't hurt…