acornonline.com also known as AcornTV is a website where you can watch the great British shows like: Above Suspicion, Prime Suspect (that the American version is based on), Midsomer Murders, Cadfael, Agatha Christie's Poirot, etc.
I love the police & medical dramas and all sorts of mysteries such as: CSI, Bones, Law & Order, Castle, etc. and now I can watch the great British shows on AcornTV. (I am located in the USA).
There is just one catch -- you can only watch a limited number of shows that they make available at any one time. There is one episode of 10 different shows available to watch any any one time. Then once a week the oldest available video drops off and a new one is added.
You, of course, can buy an entire series on DVD, otherwise you just have to be very patient and wait for a new show to be made available each week.
Another plus is that there are no "click throughs" that can lead you into computer virus/malware territory and there is nothing to download in order to watch a show.
The only "con" is I wish that there were more episodes where available to watch.