. . . and my daily-use TV is a widescreen, high-definition tube . It works great! Cost me only $40! And at 126lb, no one is going to steal it. In fairness, it fits the built-in TV cabinet perfectly and at the time a similarly-sized LCD model was close to $600, so it made sense to go with the tube.
With the massive power savings you could get by replacing this old junker, you could pay for a new flat screen in a few years. However you'd have to make sure it had the inputs to talk to your old signal sources. I've seen some new TVs with HDMI inputs only.