I have to throw out my old television. For a long time, and perhaps forever, all the new TVs will include both digital and analog receivers. So you will be able to play your VHS video tapes on them, but not in high definition. You'll still be able to use your video cameras. Two years ago, the worldwide manufacturers of VCRs agreed on a common standard for digital VCR, so you won't have another Beta-VHS controversy.
Nobody really knows.
This is all still a frontier. The computer industry is utterly convinced that with digital television, they will begin taking over a good part of the TV market. In the resulting compromise, the computer industry said it would start building digital TV receivers into the motherboards of every computer beginning next year. My own view is that TV will grow to be more like computers, and computers will grow to be more like TVs. But they will be distinct devices in different rooms, with different core functions.