In the last few months, I've gotten a flood of emails from readers suggesting stories about Al Franken and his follies. This vein could be a rich one to mine, given Franken's years of motor-mouthing on Saturday Night Live and Air America Radio, and his collisions with taxing authorities across the country. But I've let the Franken stories blow by, overwhelmed by their number. However, things changed last week when Franken's 2000 Playboy article -- "Porn-O-Rama" -- got stuck in my e-mail filter. I know what you're thinking: Kersten's got one of those prudish, Jerry Falwell-style family filters designed to...