Well, I'm half English and half Swedish, so I speak both of those fluently and have done for as long as I can remember. I started learning French when my parents bought me Muzzy [http://en.wikipedia.org/wiki/Muzzy_in_Gondoland] as a child, got worse at it when I took it at school in Scotland (with a teacher who spoke French with a Scottish accent), and finally got better when I started living in Brussels. Also picked up Dutch and Flemish then, and did a year of Latin.
My wife's Afrikaans, so I'm learning that as well, and picking up the odd bit of Zulu from her housekeeper. Then of course there are bits of other languages I've picked up out of interest; Russian, Japanese, Chinese, enough Greek to ask for chips with salt and vinegar... I don't know *much* of them (at all, really), but I know the basics.
Then of course there are the Scandinavian languages - just about any Swede will be able to at least understand written or spoken Danish and Norwegian, and anyone who speaks Dutch can at least make some sense of German.
So yeah. One or two languages. ;-)