I don't know that I have any one "proud" shot, but probably lots of small ones that made me smile.
For instance, one time at VAF, we were doing team fights (something we rarely did). I did a really nice misdirection, by staring one opponent in the eyes for multiple seconds as the teams approached each other, and then, while still looking there, stabbed someone off to my side without once moving my eyes over.
The thing that made it slightly more hollow of a victory though, is that the person I hit was a lot less experienced.
What I really love are the moments where your training, the "muscle memory", just clicks in and does the right thing. I know there have been lots of cases where I've done the shielhau-then-wind thing, completely automatically. That makes me smile.