The Collective Brain: The synoptic serendipity that comes when interesting thoughts from interesting and interested people get together. And the whole is always more than the sum of its parts.
Not sure about inspired by, but they definitely have a great deal in common. I think Due South is an excellent series (especially the final two seasons).
I love the almost word for word repetition of his back-story to people who may be interested in what a Mountie is doing in Chicago -
"I first came to Chicago on the trail of the killers of my father and, for reasons which don't need exploring at this juncture, I have remained, attached as liaison to the Canadian consulate."
Great series. I never considered it before but there are a lot of similarities in their personalities. Maybe someone can ask Sir Terry at one of the conventions?
The difference between fiction and reality? Fiction has to make sense.