I watch this show from time to time. I say it's one of those shows that really know how to make their characters be in the story than use them to drive it (like Law & Order or CSI). I can see some things that some people don't like, but I still like them.

To me, it wasn't to show the "professionalism" of how the NCIS teams do their jobs, but make it more enjoyable. I don't like some other cop shows that go way into the "professionalism" like Law & Order as it just goes into the nitty gritty and just bore me to death.