There is a pledge-drive show playing this month on PBS. They've kind of stuck to generally crappy artists from the 1960's. Still, it may be interesting enough, if you can stand the pledge breaks.

More info:
http://www.petulaclark.net/britbeat.html

If you think you may have missed the show near you, double check your local PBS station listings. For example, the listing above shows only two showings on the Boston channel, but actually there is another airing tonight on the "second" Boston PBS channel (WGBX).