Dan Rather is happier than a horse without a saddle — and feeling just about as free. Lately he's been humming the lyrics to Rodney Crowell's "Still Learning How to Fly." He even popped into Comedy Central on Tuesday night to banter with fake news guy Jon Stewart and offer a few folksy one-liners. On a more serious note, the proud Texan and former CBS News anchor is embarking on a new career as a "global correspondent" for "Dan Rather Reports," a weekly news program on the super-niche network HDNet. He has free rein to gallop into stories that his...