What is your favorite cover?

Diana Krall's spin on the stunningly beautiful Joni Mitchell tune A Case Of You. 

I love covers. Thanks for this post so I can find some new gems! I like so many, but one I always return to is Shawn Colvin’s cover of "Some Day" by Steve Earle. But my latest love is a cover of an early Elton John ballad, "Love Song" by Melody Gardot — an audiophile treat to boot.

And to follow up on @bigtwin 's comment, it is interesting to consider what makes a good cover. So much of music history had a separation of composer and performer. I always think of a good cover as one I want to listen to as much or more than the original. Sometimes a new performance shows something else magical about the composition itself that the original doesn't capture for lots of reasons. Thanks again to the OP for generating this offering of performances!

Eddy Vetter singing "Masters Of War."

Johnny Cash "Hurt"

Disturbed "Sound of Silence"