"TV shows are judged as a whole, with even the most minor of fluctuations causing a 10/10 to become a 9/10. However, every great show is composed of one or more flawless seasons, and each season ranges from as few as eight episodes to hundreds. While the entire show is the focus, fans can't help but adore the twenty minutes or an hour of storytelling perfection that these episodes present.
Episodes are arguably more memorable than entire seasons, which is why this list is taking the daunting task of ranking the twenty greatest of all time. From classic comedies like I Love Lucy to dramatic series like Lost, this list features some of the most iconic and well-written episodes on TV. Ranking the episodes based on writing, acting, directing, story, memorability, fan opinion, critical acclaim, and how iconic and defining they are, only one episode per series is eligible, so as not to bloat this list with the same shows."
-Lucas Kloberdanz-Dyck