I had been reading Grisham's series of legal novels and Wambaugh's collection of police books when "The Lincoln Lawyer" movie came out. It was pretty neat so I got the book and that lead me to the other Connelly books, including the Bosch series. "The Lincoln Lawyer" was made into a pretty good movie.
Johnson has a web site that is pretty cool too. He describes annual "Longmire" holidays in his small town in Wyoming. He also sells T-shirts based on events in his books. I bought two.
http://www.craigallenjohnson.com/
Although not the same genre, I also enjoyed the TV series "The Unit". It ran for 4 seasons, and all are available on DVD.