Despite having announced plans to retire as host of The Tonight Show in 2008, Jay Leno admitted yesterday that he was 'having serious doubts' about leaving the TV show after coming across a recent news item in which a Georgia woman doused her philandering husband's groin in kerosene and set it aflame. The veteran comedian said the incident would provide a wealth of material for 'many, many years to come.' 'Boy, talk about keeping your marriage exciting,' said Leno, who claimed he had already assigned 19 of his top writers to the story. 'It's John Wayne Bobbitt all over againcrotch violence set in the South. If I leave it for Conan [O'Brien], he'll just do two or three really good jokes and then drop it. What a waste.' The victim, 32-year-old Kenny Garver of Athens, GA, was unavailable for comment due to the blistering third-degree burns covering 70 percent of his body. 