It was sad to hear about the passing of Mstislav Rostropovich. I know a student of his, and many cellists, who regarded him highly. You might, or might not, remember I met him about a year ago, and inquired about an interview. You can read about that encounter here.
There are many links on the web for his music and videos. I'll play his recording of the Miaskovsky Concerto this afternoon on WITF. You can listen live here.