2. Stevie Nicks and Tom Petty, "Stop Draggin' My Heart Around"
Stevie Nicks wasn't going to take any chances on Bella Donna, her first solo album. Not only did she recruit Don Henley for "Leather and Lace," but managed to get her hands on "Stop Draggin' My Heart Around," a song Tom Petty and Mike Campbell wrote and slated for a Heartbreakers album. Stevie worked some of her magic (with a little help from Jimmy Iovine) and the song moved to her album. It hit Number Three on the Hot 100. They've sung it together a number of times over the years, most notably on Petty's 2006 tour, which featured Nicks on many of the dates.