TV ratings for this summer have been abysmal. “Despite unleashing a torrent of first-run reality series, CBS, NBC, ABC, Fox, UPN and The WB drew a paltry 30 percent of all TV viewers during the week of Aug. 8-14.” Last week’s much-hyped finale of “I Want to be a Hilton” lured 3.7 million viewers opposite a Tuesday chapter of the Univision telenovela La Madrastra (The Stepmother), which had 5.3 million viewers.