Most people would probably go for Kate's death. I'd've probably picked that one, to be honest, but, since I live in Europe and didn't watch the eps in "real time" back then (as I do now, thanks to live streams), I was already spoiled in that regard. The way she died was still painful to watch, but the death itself didn't come as a surprise.
So, what else? *ponders*
gibbsgirlabby picked a wonderful moment, namely Gibbs giving Tony a pat to the butt in "Aliyah." Ah, what a loverly image that was. (And why do I get the feeling that it was ad-libbed by MH? I highly doubt that was in the script! *g*)
I might have picked the full body tackle in "Baltimore" (
gibbsgirlabby , raise your glass!!! *g*) but, again, I had already seen the scene as spoiler, so it doesn't really count, does it? (Well, I did go "OMFG, did that just happen?!?!?!?" the first time I saw that spoiler, so maybe it does count...LOL)
There's a particular scene that comes to mind which I will not pick because it's my pick for tomorrow's prompt. *g*
In a rather negative way, I went "OMFG, did that just happen?!" when I saw the ZOMG THIS IS SO OOC IT HURTZ MY EYEZ!!! shower scene in "One Last Score." Hell, there are a bunch of really negative "OMFG, did that just happen?!" scenes, like the headdesk-worthy scene in "Mother's Day" when we found out that Shannon's mother got off scot-free thanks to Gibbs being ZOMG THIS IS ALSO SO OOC IT BURNZ MY BRAINZ. Or how about Gibbs and Mallison leaning in to kiss each other at the end of...was that also "Mother's Day"? That came so totally out of the blue, it freaked me out (and not in a good way!). Or the reason that was given for serious!Tony being so serious in "False Witness" because ZOMG DON'T YOU KNOW YOUR CHARACTERS?!?! Does any of that count? But I think this is about shock value in a good way, so...
My pick's gonna be the teaser for "Requiem" where Gibbs drives the car into the water. We had no idea what was going on, all we saw was the car in the water with Gibbs and an unknown young woman, and Tony running around, all heroic, shooting bad guys and jumping in after his
lover boss. I sat there with my mouth open and remember thinking, "They can't top that..." but they actually did, because the rest of the episode was all kinds of awesome. \o/