Also worth watching, from the same original film, are the Dance of the Cossaks and Zaporozhian Cossak Writing a Letter to the Turkish Sultan videos.
(If you want to see these with a larger picture, you can find the .WMV files from which the YouTube videos were derived at dancilla.com, along with a thousand or two other dance videos. And what do you know, if you just love the dance moves of WWII-era Russian soldiers that much, a DVD of the entire 71-minute original film can be yours for the low, low price of $19.99)
Feudalism: Serf & Turf