TV Guide's 100 Greatest Episodes of All-Time

100 Greatest Episodes of All-Time (1997) and Top 100 Episodes of All Time (2009) are lists of the 100 best television show episodes in U.S. television history. TV Guide published both lists: the first, published in June 28, 1997, was produced in collaboration with Nick at Nite's TV Land. A revised list was published in June 15, 2009. The lists excluded game shows and variety shows, but included situation comedies and drama series.

About 25 shows from the original list were featured during a special week on Nick at Night on Nickelodeon and TV Land. On the original list several shows, including I Love Lucy, The Mary Tyler Moore Show, The Dick Van Dyke Show, Seinfeld, Cheers, and The Odd Couple had multiple entries, but none did on the 2009 list. The original list included 35 episodes from the 1950s and 1960s, while the 2009 list only included 10. Over one-third of the new list first aired in the twelve years since the original list, including 14 from the most recent two years. The June 2009 list included episodes as recent as the April 12, 2009, "Peekaboo" episode of Breaking Bad and the April 7, 2009, "Baptism" episode of Rescue Me, while the 1997 list included a two-month-old episode of The X-Files.

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