Some television shows incorporate a considerable degree of historical or factual information while attempting to make the presentation or framing of such content entertaining or exciting. By making learning seem "exciting" they can be said to stimulate curiosity, taking
Elinor Wonders Why as an example. The presence of edutainment is especially evident in
children's television series, such as
Sesame Street,
Teletubbies, and
Barney and Friends. Discovery Channel is also known for its various shows that follow that theme, including
MythBusters. Sometimes these programs may be more entertaining than educational and may replace educational shows in the television program lineup. The History Channel has transitioned from producing primarily factual and historical documentaries to more sensational, dramatic, and supposedly entertaining programs, with educational content a secondary concern. Television series notable for negative reception, from around the world, either by published critics, by network executives or by audience response, can be judged based on poor quality, the lack of a budget, rapid cancellation, very low viewership, offensive content, and/or negative impact on other series on the same channel. In some cases, a show that is acceptable on its own merits can be put in a position where it does not belong and be judged "worst ever." In many cases, "worst television series ever" lists are slanted toward more contemporary shows, in recent memory. The
Children's Television Act of 1990, which was first fully enforced in 1996, requires broadcast television stations in the United States to carry a minimum of three hours of "
educational/informational" programming geared directly at children. The move prompted an exodus of non-educational children's programming to cable television and largely failed in its efforts to expand the amount of educational television on the airwaves (in fact, children's television in general has declined significantly on broadcast television since the act was imposed, although it can be argued that the E/I regulations could very well be the
only thing keeping children's television on broadcast airwaves in the 2010s). ==Incidental educational value==