This morning I caught the two-part, 8th season episode of JAG that served as a back-door pilot for NCIS. I believe this is the first time it's been shown in syndication; it is the first time I've seen the episode in four years.
When Gibbs and crew were introduced in the backdrop of JAG, they seemed like slick intruders. How could they possibly suspect Harm of murdering office harpy Lt. Loren Singer (played to ruthless perfection by David James Elliott's wife Nanci Chambers)?
In hindsight, one can view the episode as just another case for NCIS. Of course Gibbs would suspect Harm. Of course Tony would banter with his squared-away female teammate. Of course Ducky would go off on tangents. Of course Abby would squirm in her "court clothes." Bellisario's vision for the show and the team's dynamic was in place from the beginning and hasn't flagged.