A DECADE AND MORE AGO, MANY A stand-up comic got easy laughs by suggesting that the primary benefit of subscribing to all the pay channels was a virtually continuous chance to watch The Beastmaster, a bad sword-and-saucery epic from 1982. Well, that was back during cable’s awkward growing years. Now the medium is a mature, established industry. And after months of closely monitoring the offerings of the pay-cable channels, I am proud to announce that the most frequently broadcast movie of the year was (Hollywood fanfare, please) Bikini Car Wash II. Now we’re getting somewhere!