ER (TV series)
Following the broadcast of its two-hour pilot movie on September 19, 1994, "ER" premiered Thursday, September 22 at 10:00. It remained in the same Thursday time slot for its entire run. "ER" is NBC's third longest-running drama, after "Law & Order" and "", and, the longest-running American primetime medical drama of all time. On April 2, 2008, NBC announced that the series would return for its fifteenth season. The fifteenth season was originally scheduled to run for 19 episodes before retiring with a two-hour series finale to be broadcast on March 12, 2009, but NBC announced in January 2009 that it would extend the show by an additional three episodes to a full 22-episode order as part of a deal to launch a new series by John Wells titled "Police", later retitled "Southland". "ER"s final episode aired on April 2, 2009; the two-hour episode was preceded by a one-hour retrospective special. The series finale charged $425,000 per 30-second ad spot, more than three times the season's rate of $135,000. From season 4 to season 6 ER cost a record-breaking 13 million dollars per episode. TNT also paid a record price of $1 million an episode for four years of repeats of the series during that time. The cost of the first three seasons was 2 million per episode and seasons 7 to 9 cost 8 million dollars per episode.
KERA-TV
In 1974, KERA gained a sister station on radio, when National Public Radio station KERA signed on the air on 90.1 FM; over time, KERA radio would expand its reach throughout North Texas through the launch of translators in Wichita Falls, Tyler and Sherman. That year, channel 13 became the first television station in the United States to broadcast episodes of "Monty Python's Flying Circus"; the station is often credited with introducing the British comedy series to American audiences, which eventually gave "Flying Circus" a cult following.
On September 1, 1988, North Texas Public Broadcasting signed on KDTN (channel 2) in Denton to serve as the market's secondary PBS member station, a project which the organization had been working on since May 1977, when it filed an FCC application for a construction permit to build an educational station on VHF channel 2 (North Texas Public Broadcasting would reach an agreement with its lone remaining competitor for the permit in 1984 to obtain the permit). The organization primarily used KDTN to run educational and instructional programs that had previously filled much of KERA's daytime schedule, along with carrying some programs produced by the University of North Texas (the KDTN studio facility was based on the university's campus). At that time, KERA shifted its schedule to offering primarily entertainment programming from PBS and other public television program distributors such as American Public Television; channel 13 also identified Denton as part of the station's service area in station identifications during the period it operated KDTN.