There are various rankings of the best western tv shows of all time, with different outlets listing different numbers of top shows, including 15, 20, and 25. Some outlets are also focusing on specific aspects, such as the greatest episodes or shows that define the genre. The rankings appear to include classic shows, with at least one from 1955, and more recent ones, like Deadwood, which is considered by one outlet to be the greatest western tv series of all time.