One thing that a lot of people seem to forget about HDTV is that it comes in pretty damn well over the airwaves. You don't necessarily need cable to get a nice HD signal — at least for the major networks. This Pinnacle PCTV HD Pro Stick is antenna that plugs into your laptop via USB to hook you up with all the HD glory you can eek out of the air. It even comes with DVR software and a remote, turning your laptop into a fully functioning HDTV setup. It probably works best in a major metropolitan area where signal strength is high, but if you live in a city and just watch the networks this could be a good way to save yourself some money by axing the cable bill. It's available online now for $130.
— Adam Frucci

Pinnacle, via Uncrate