IN HAPPIER TV NEWS, the Viacom media conglomerate might be close to aggreiving an 11-year-old mistake. TV Guide reports one of the company’s cable channels, TNN, is planning to commission new episodes of The Ren & Stimpy Show, the cartoon classic originally made for, and mismanaged into the ground by, Viacom’s Nickelodeon channel. The atonement part is that TNN’s negotiating to rehire R&S creator John Kricfalusi, whom Nickelodeon ceremoniously fired as producer shortly into the original show’s second season.