Add Saturday Night Live to the ranks of those making sport of David Letterman's difficulties. But in the hands of SNL, Dave got off pretty easy. "Weekend Update" anchor Seth Meyers dubbed the extortion attempt "a stupid human trick," adding that the would-be blackmailer was threatening to reveal embarrassing details of Letterman's personal life: After sex, Dave would say, "Stay tuned for Craig Ferguson." Elsewhere in the Letterman frenzy: