Russian folk music is some of my favorite. One of my most favorite is Kalinka!
[youtube]http://www.youtube.com/watch?v=qn06W-iBfkQ[/youtube]
Naturally, however, being German, I need to post a good German folk song... (The good Bavarian shit, though. Westphalian music is very bland...)
[youtube]http://www.youtube.com/watch?v=x5q5vDSML3M[/youtube]