You know that feeling when you'd like to share a great song with your internet friends, but Youtube can't deliver the version you like. I have searched and scouted for what I believe to be the original version of Bob Dylan - Knocking on Heavens Door, but all Youtube can come up with is an awful newer rencording and rubbish cover versions, ugh pfff. So instead I'll share a cover version I do like with Leningrad Cowboys (could also have chosen Eric Claptons version, which is also nice), a great cover band in all respects. They are a Finnish group with varying members AFAIK, which made a widely famous concert with the Red Army Choir, this is just one of many songs from this concert.
This next one is Stairway to Heaven (Led Zeppelin), which I think Leningrad Cowboys and the Red Army Choir have also managed to create a unique cover of, while still not molesting the original. (Hint, wait for the drums!)