Television is one of the most successful technological consumer products ever produced. It has spread to virtually every household in Western society and for many TV has become their most important source of information and entertainment. TV, however, is not a static medium - neither as a technology nor as a service. Game consoles, VCR´s, cable and satellite systems have already begun to change the image of what TV is and what it can be. In the years ahead, television faces even more radical changes and developments.