Relive every moment of the long-running NBC drama, 'ER.' The show is based on the fictional County General Hospital in Chicago, most often including events that occurred in the emergency room. While the cast of the show changed throughout its 15 seasons, memorable characters, like Dr. Doug Ross, played by a young George Clooney, leave a memorable impression on fans old and new. Constant personal and professional drama will keep you on the edge of your seat throughout the series. 'ER: The Complete Series' includes all 15 seasons on 84 discs, providing you with hours upon hours of entertainment. With over a decade on the air, the show broke many records and was a stomping ground for many familiar actors. With the complete set on DVD, you can see why the show became a cultural phenomenon.