Back in the 1990s, Clark told you about a company called Replay TV that changed TV as we know it. The service allowed you to use a computer hard-drive to record TV and watch it as you wished. Replay TV was soon eclipsed by TiVo. Now TiVo faces its own threat from a new technology that could be a boon to cable providers.

Cablevision is the first provider eyeing the launch of network DVR capability in early 2009. You'll be able to watch something and just decide to record it -- without TiVo or an actual DVR. Cablevision will allow customers to store content on their servers -- no hardware to buy, nothing to break, you just pay them a monthly fee. It's cheaper to store what you want on a mainframe than for everyone to have their own individual machine.

Meanwhile, Clark also wants to let you know about the poor man's DVR -- which is any inexpensive computer that has a built-in DVR. When you want to watch what you've recorded, just hook your computer up to a TV or watch it on the computer itself. No monthly fees!