Communities that have banned pit bulls may want to rewrite their laws to cover Dan Caplis and Craig Silverman, KHOW's new team. Like the controversial breed of canines, they won't let go once they've sunk their teeth into someone -- especially when that someone is embattled University of Colorado professor Ward Churchill. For months, the legal twosome has devoted most of its broadcast to cataloguing Churchill's alleged sins, and rather than report on other reporting, the two have uncovered new recordings and documents that have advanced the story. Even those who disagree with their conclusions have to acknowledge their doggedness.