One of my favorite songs of all time is "One," by U2, from their Achtung Baby album (which happens to be my favorite U2 album.
Mary J. Blige is including a cover of "One" on her upcoming Greatest Hits album, featuring Bono on vocals. I usually am unsure about R&B covers of rock songs, but for some reason I am expecting this version to be pretty good. Blige is a real talent, and might have an interesting interpretation of the song. Let me know what you think once you've heard it.
Speaking of interpretations, Melissa Etheridge's cover of Tom Petty's "Refugee" on her Greatest Hits CD is outstanding.