I never watched it either until I started watching the reruns! now I love it! Its a lot different than the shows you mentioned!  Its more about a family ,all part of New Yorks finest in some regard ,Father being Police Commisioner running a police depatment with two sons on the police force and daughter in the DA's office!  Its great ,I never watch it without saying ,If only this would be true ,it would be a better world! Most are about solving a crime ,this is about the methods that are used in solving the crimes and problems within!