27. "If You Say My Eyes Are Beautiful" With Jermaine Jackson
Jermaine played an instrumental role in launching Whitney's career, recruiting her for backup vocals early on and then producing three tracks on her smash debut. She returned the favor — and then some — by knocking this soaring duet from his 1986 album Precious Moments out of the park.
(Photos: REUTERS/China Photos; Dave J Hogan/Getty Images)