Daniel Shiffman taught me to code for the first time in a way that totally shifted the way I thought about coding from utilitarian to fun and creative. I wonder how many lives he's had this impact on. Good on you sir.
Between semesters I watched some of his search algorithm videos, including his two part A* videos, and recreated it. When semester started I took a classical AI course and the first assignment was search algorithms. And my goodness was it helpful.