Geostationary orbit
Because this orbit is so high, it takes radio (and light) waves about 1/4 second to go up to the satellite and back to Earth.  This means that a broadcast interview taking place between the television station and a distant reporter can have a gap of a half second (1/4 second to go from the studio to the reporter, and a 1/4 second back to the studio, where the signal is then sent to viewer).  This half second delay can be noticed in many news broadcasts.