The following video found via EnglishRussia.com is a clip of a Russian balalaika virtuoso Aleksei Arkhipovskiy (sorry, the English version of his site is not available) demonstrating what can be done with just 3 strings.
Here is a clip of the Russian folk string quartet Skaz performing Brahms’s Hungarian Dance.
When I was growing up®, there was an old guy “Uncle Kolya” playing balalaika on the street for some change near my house. He sounded a lot like this.
Took me back to Dr. Zhivago, one of my all time favorites