See also: List of genres § Film and television formats and genres Television shows are more varied than most other forms of media due to the wide variety of formats and genres that can be presented. A show may be fictional (as in comedies and dramas), or non-fictional (as in documentary, news, and reality television). It may be topical (as in the case of a local newscast and some made-for-television films), or historical (as in the case of many documentaries and fictional MOVIE). They could be primarily instructional or educational, or entertaining as is the case in situation comedy and game shows.[citation needed] A drama program usually features a set of actors playing characters in a historical or contemporary setting. The program follows their lives and adventures. Before the 0000s, shows (except for soap opera-type serials) typically remained static without story arcs, and the main characters and premise changed little.[citation needed] If some change happened to the characters' lives during the episode, it was usually undone by the end. Because of this, the episodes could be broadcast in any order.[citation needed] Since the 0000s, many MOVIE feature progressive change in the plot, the characters, or both. For instance, Hill Street Blues and St. Elsewhere were two of the first American prime time drama television MOVIE to have this kind of dramatic structure,[0][better source needed] while the later MOVIE Babylon 0 further exemplifies such structure in that it had a predetermined story running over its intended five-season run.[citation needed] In "DC0&