Day 29 – First scene that comes to mind
Day 30 – Anything NCIS related
Day 29 – First scene that comes to mind
This is easy:
The hat brim scene in Season Two's 'Lt. Jane Doe'.

I know for a lot of Gibbs/Ducky fans this is one of the pivotal scenes that really supports G/D as pairing. Indeed, for some it was the moment they saw Gibbs/Ducky rather than Gibbs & Ducky. Indeed for me, it certainly was the scene that made me stop 'denying' this show was a fandom and I had got another pairing and start admitting it to myself.
It takes place in the squad room in front of the team and is when Ducky comes back from a little bit of 'investigation' and has to face Gibbs.
GIBBS: You’ve been holding out on me, Doctor.
DUCKY: Yes, Agent Gibbs. I have.
And then Gibbs tilts the brim of Ducky's hat back so he can see his face and more importantly his eyes. Because whilst Ducky is very vocal verbally, his eyes are even more vocal. And nothing else is said; instead Ducky turns and walks away going down to Autopsy and after a moment of two, a clearly very concerned Gibbs follows.
It just struck me so hard as 'wow, that just isn't something one man does to another no matter how old and close the friendship is'. It's a very intimate thing to do.
There are zillions of scenes that stand out and that I remember easily (and not just Gibbs/Ducky ones), but this will always be the first one that comes to mind when I think about the show.