According to the book, Seitz and Sepinwall considered a television series for their ranking if it matched the following criteria: • US TV shows only: A TV show was only considered if it was either made in the United States, or if it was originally produced for an American television network. The two authors admitted that this was a "blurry" category to decide, and that some of the calls they made "are sure to be considered debatable." •
Completion: Seitz and Sepinwall wanted to only include shows which had been completed prior to the creation of their list. However, a few exceptions were made to include current shows that had aired for decades (such as
The Simpsons and
South Park), current shows that were never officially
cancelled yet may never return from
hiatus (such as
Curb Your Enthusiasm and
Louie), and shows that were once cancelled but eventually revived for additional seasons (these include
Twin Peaks and
The X-Files). •
Narrative fiction only:
Reality programs,
documentaries,
sketch comedy, talk shows,
news programs, and
sports programs were not given consideration. Instead, the book's rankings mostly consisted of dramas,
comedies,
children's programming and certain
anthology series. Once a television series passed these criteria, they were ranked on a ten-point scale by either one of or both of the critics in six categories: "Innovation" (whether or not it did stuff that had been seen in the
medium before), "Influence" (how a show served as inspiration for those that came after it), "Consistency" (whether or not the show's quality fluctuated season-by-season), "Performance" (how good the actors/performers were on the show), "Storytelling" (the quality of the writing on the show), and "Peak" (how great the show was at its best compared to the rest of American television's history). Shows which aired for only one season were slightly penalized, receiving a maximum of nine points for most categories except for "Consistency", where they were only given a seven as a maximum. The series which were among the 100 highest placed in the points tally were counted in the rankings. == Top 100 ==