I've been playing some fairly bad Widowmaker the last several days - this just happens, my aim falls apart and I still don't know why, and the only way out is through - and so coming in to a Widowmaker-only heatshot-only Deathmatch FFA in progress and making some honestly rather elegant shots felt really fucking good.
This highlight grabbed one nice one, but not the best one, at least, to my mind, so I grabbed... well, it should've been all of the game, but for some reason, it cut off the first 30 seconds or so. Anyway, here's most of the game on YouTube. I queued it to 3m30s in the video because that's the start of a nice pair of kills, the second of which was one of my favourites of the game. The other favourite comes about 30 seconds after that, and you'll know it when you see it.