Like Poe's purloined letter, some stories lay in plain sight, unnoticed. On rooftops, no less. I'm talking about the return of the humble TV antenna in the age of HDTV. As Newsweek's Johnnie L. Roberts says so eloquently: "The irony is marvelous. Pushed into obsolescence by the technological advances of cable and satellite, antennas are re-emerging thanks to one of the most promising high-tech services of the digital age. High-def channels can be plucked out of thin air by antennas just like regular broadcast signals--no cable, no satellite dish, no monthly bill, no waiting for the cable man." OK, if you've got a Jon Stewart addiction, the dear old antenna will do nothing to help. But how many such addictions do you really have? If the answer is just one or two, try this exercise: Get your cable or satellite bill. Multiply what you're paying for television by 12. That's what you're spending every year for Jon Stewart. Still think it's worth it? Then multiply the figure by 10--that's the amount of cash you could have put in your retirement fund over a decade. And what with cable's constant rate hikes, the final figure will be considerably larger than this simple calculation. If free TV seems like a good idea after all, the Consumer Electronics Association maintains an antennaweb site expressly to help people like you save money every month. Consumer hints: All HDTV channels live in the UHF band, so make sure your antenna works well at those frequencies (like the Terk indoor model shown here). You'll need a TV, set-top box, or DVR with an ATSC (meaning digital) tuner. But the results are worth it. Broadcast HDTV operates at a higher data rate than cable or (especially) satellite. So over-the-air HD picture quality is more than competitive. Salut!