Intelligent Board Games and Social Interaction?

frogcircus asks: "Several weeks ago, at a neighborhood yard sale, my wife found an intact copy of Scotland Yard. I had been looking for one for several years (ever suspicious of eBay), driven by fond memories of group games in the late 80s. We played with a group of friends last night, and while some of us loved the game, others seemed a little less enthralled. It soon surfaced that the logic and reasoning involved in the game made it highly attractive for some of us. This got me thinking that perhaps the game was especially appealing to the geek mind. Which leads to my question: to which board games do you feel a close affinity? And to what degree have they engendered social interaction who don't share your particular interests?"