Having watched series 1 to 3 on Netflix, could not wait for series 4, so purchased the DVD. It's so good, watched series 1- 4 again. Can't wait for series 5 to appear. Revolves around a few regular characters in a New York ER room. It's light hearted, funny and also serious. Jackie (Edie Falco, best known for being Tony Sopranos wife in "The Sopranos") is an experienced emergency nurse with a drug habit and for being unfaithful. Guarantee if you like episode one, beware you will want to episode after episode.