I wasn't sure about the s1 cast, since I tend to skip that season altogether...
True. NCIS has went through the most changes cast wise...
Still NCIS episodes tend to focus more on cases instead of personal issues (on most days) or the character dynamics... At least I can't imagine an NCIS episode where the main cast talks about life for over 20 min within the episode & its not even a double one
That's something that would only happen in LA...