Card carrying geek... I have a few friends like that. You don't really need to be a geek to carry cards around, IMO. Some of my card carrying friends just also happen to be geeks, and some aren't. Personally, the only card I carry around with me is my credit card, and I seldom actually use it.
Where I live, knowing a second language is a requirement for colleges (above community college level and stuff like that). Personally, I know English and Russian and am currently learning French. I agree with Pelar that it's pretty rewarding.