Not a real serial, but just a fantastic pastiche by SCTV, starring Eugene Levy as cowboy Don Mills, Martin Short as his clumsy sidekick Cheaplaughs Johnson, Andrea Martin as Maggie Butterfield and Joe Flaherty as perfectly named villain Slade Cantrell. Just watched the whole presentation on Youtube last night. Marvelous stuff, obviously written by people familiar with vintage westerns and serials. Cantrell is in league with the Japanese, trying to smuggle radium out from under Maggie Butterfield's ranch in order to smash the allies! And the whole serial is shown during a silly kids' show called Happy Hour, which is filmed in a bar with a constantly drinking host, a goose puppet and a barely interested bartender. If you like serials or early forties westerns, check out SIX GUN JUSTICE.