Go (a.k.a. weiqi, igo, baduk)

According to Wikipedia, this is the oldest continuously played board game in the world at ~2500 years old and it really is pretty good. There are a few members who are keen on learning a bit more about this amazingly deep game.

Here's a nice introduction to the game from the very basics up to some ideas about general strategy:
http://playgo.to/iwtg/en/

I also recommend Sensei's Library as a good online resource to learn or improve at the game:
http://senseis.xmp.net/

BeardyTom wrote:According to Wikipedia, this is the oldest continuously played board game in the world at ~2500 years old and it really is pretty good. There are a few members who are keen on learning a bit more about this amazingly deep game.

Here's a nice introduction to the game from the very basics up to some ideas about general strategy:
http://playgo.to/iwtg/en/

Any time you want a game