Luther Vandross & Mariah Carey "Endless Love"

Thirteen years after Lionel Richie and Diana Ross teamed up for the wildly popular ballad "Endless Love", Luther Vandross and Mariah Carey did the same. The love song came from Vandross' Songs album which contained covers of vintage R&B tunes.

Sting - "Brand New Day"

No matter how many hit songs Sting has, people will always remember him as the guy who allegedly has sex with his wife for hours at a time.  Poor guy.