Set in a Chicago County General Hospital, the multi-Emmy winning ER is very much in the tradition established by the earlier Hill Street Blues. Like that series, ER also features a range of strong characters whose personal lives often reflect the turmoil of their working environment. It also similarly features a deft, fast-moving mix of comedy, intrigue and tragedy. It could also be seen as a precursor to The West Wing, in that we regard with some awe the ability of these characters to keep on top of the mounting chaos in their day-to-day lives and the myriad problems thrown at them. In ER, this chaos may mean crack addicts, violent patients tumbling through plate glass screens, vindictive colleagues or a chief of staff who insists that fellow surgeons operate on his sick dog.