The first time i was blown away by PC graphics was the Unreal intro on 3dfx. Just
https://www.youtube.com/watch?v=QLBgaLOi7N4
Incredible for the time. First time seeing anything like it. I remember watching a tech demo for Unreal after it was released and still being blown away - first time things like mist, smoke, reflections and water had been used like that in a game
Totally agree was utterly amazing at the time, would love to see a modern true sequel to Unreal.