I don't have the elegance to describe the sounds of languages like Stephen Watkins did with his discussions on Turkish and Greek. I lack a theoretical basis in linguistics. Yet, I am on the cusp of knowing two languages. Or dozens.
I'm only fluent in English. I'm decent in Swedish. I read my news in Swedish and listen to a Swedish podcast. I read fiction and a number of Swedish blogs, everything from photo journals to young adults discovering their life-path. But, my vocabulary could still improve and I'm not very good at constructing my own sentences written or spoken.
Yet, once one moves beyond an initial language, the others become easier. Swedish is part of the family of Scandinavian languages all of which have a lot of similarities. I first realized this early in the process of my learning Swedish. I waited at the Paris de Gaulle airport, reading a newspaper. It was in Danish, but the words were similar to Swedish. In fact, I remember reading Meg Whitman from eBay had decided to run for California governor after Arnold Swartzenegger's term ended. I particularly enjoyed the article calling Arnold a muskel bøffen (or something similar). I also found it ironic that I was traveling halfway across the world and learned something about home. 
One of my Swedish colleagues is amused that I've learned Swedish because he thinks it's pointless. Most Swedes learn English as a second language and many of them know several languages. Yet, Swedish crops up in the most unusual places. I read a blog post on revisions and in the comments, the trackbacks had a link from someone in Sweden who had found the blog and linked to it on their blog. Yes, I found a new Swedish blog to read.
For those of you who know other languages, what are some of the strange occurrences you've had? What languages are you interested in learning?
 Another odd Swedish encounter was listening to Swedish radio and hearing them talk about the love life of two male penguins at the San Francisco zoo.
P.S. I'll be traveling for the next three weeks in Sweden, soaking in the language, enjoying the culture, improving my Swedish. It's a small world. You'll probably see me around ;)