Favorite character and moment is Dalinar and Dalinar's "I am unity." I've always liked Dalinar, but Oathbringer made him my #1 (with Kal and Adolin tied for #2 now, ha). Before, I liked how honorable he was but to me that's all he was. An honorable man who I thought of as having a typical Alethi demeanor in the past but now is just the odd Alethi guy whose honor shtick is basically ignored by almost everyone else.
Then Oathbringer fleshed him out and I was shown how much of a glorious person Dalinar truly is. A man who was addicted to the Thrill far more than was the "typical Alethi," a man who didn't feel like he was alive unless he was fighting and mowing enemies down, a man who was barely a father (especially to Renarin) or a husband, a man who ruthlessly burned down an entire city in his rage and whose wife went up in literal flames with it. That led to him realizing the kind of man he was and falling to depression and alcoholism, then to seeking out magic for his forgiveness because he didn't have the tools for it himself.
All of which led up to the most amazing moment. His memory recovered, in the clutches of Odium who promised to take away his pain. Instead of going the emotionally easy route, he stood back up and took responsibility for every little thing he's done in the past, vowing to keep moving forward even with the mistakes of his past. One of the simplest lines but one I love completely: "Forgiven. The pain he'd so recently insisted that he would keep started to fade away on its own."
Sorry for the long-winded post, but storms, I love Dalinar so much now, for Oathbringer fully brought to light how much of a truly strong person he is in the areas that matter the most.