What is the first television show to be broadcast in HD (High Definition)?
As per Wikipedia: On April 6, 1997, CBS went on the air with WCBS-HD from the top of the Empire State Building, New York, doing demos and evaluations. On October 29, 1998, the American Advanced Television Systems Committee (ATSC) HDTV system had its public launch during the live coverage of the lift-off of the Space Shuttle Discovery. The signal was transmitted coast-to-coast, and was seen by the public in science centers, and other public theaters specially equipped to receive and display the broadcast. The broadcast was made possible by the Harris Corporation, which sponsored the equipment necessary for transmitting and receiving the broadcast. The broadcast was hosted by former CBS News anchor, Walter Cronkite, former Gemini/Apollo era astronaut Pete Conrad and former NBC News anchor Mary Alice Williams.