I always enjoy seeing how people get to Joni from another artist. Just for the record, I was thinking:
Britney covers "Satisfaction" on her latest; The Stones sang with The Chieftains on "Long Black Veil"; Joni sang "Long Black Veil" with Johnny Cash on his TV show (or Joni sang Magdalene Laundries with The Chieftains, take your pick) Bob NP: Elton John, "Jack Rabbit"