Go

Omg! I listen to Day9 (hope you read this) for so long, that I remember him saying "go is as boring as watching paint dry"... I love day9, but I also love Go, its part of my life more than computer games. Day9 <3 thank you for saying something nice about it! ^^ respect! <3 Sending my best wishes to you from Czech Republic, you know, where your family was from :D Haven't forgotten that either :D Stay awesome man!
Btw. I was surprised you never tried go, mainly mathematicians and developers play this game, and you with your love for games... you should try it just for a bit. The learning-curve in the beginning is just amazing. I always recomend igowin.exe to my students as a start, a program under 1mb big, very very easy.