This is a great video of Monti’s Czardas by double bassist Roman Patkolo (with Jan Jirmasek accompanying on bass) and Maxim Vengerov on violin. Guanaco from the Cellomania blog recently sent me a link to this post.
Digging through my archives, I realized that I had posted this before but had not correctly archived it under bass videos. You can check out the original post from July 2006 here, which has a few comments associated with it. Thanks to Guanaco for sending me this link and here is the aforementioned great video of Maxim, Roman, and Jan: