As an ignorant American I'm saddened to say, very little. One thing that comes to mind is Simo Häyhä.
I cant forget Linus Torvalds. The third most influential person in my life behind Thompson and Ritchie. Without these three I would never have found one of my greatest joys, coding.
I think of the pictures of snowy landscapes crowned with ethereal lights dancing in the night.
Stories from my dad about a Finish violin maker who used to hitchhike everywhere dad used to give frequent rides to.