The Nylons "Kiss Him Goodbye"

The Canadian a cappella group The Nylons made their living covering oldies songs such as "The Lion Sleeps Tonight" and "Happy Together". In the case of "Kiss Him Goodbye", the group took Steam's "Na Na Hey Hey Kiss Him Goodbye" and turned it into a #12 hit on the Hot 100 in 1987 (#10 on the Adult Contemporary Chart).

Richard Marx - "The Way She Loves Me"

Take a listen to Richard Marx's "The Way She Loves Me".  With its a capella intro followed by bass riff, the song is one of Marx's better efforts...if only because it's different.  Listen closely and you can hear Luther Vandross and Lionel Richie.  Like many of his hits, the song is about his now ex-wife Cynthia Rhodes.  

Boyz II Men - "In The Still of the Nite"

The quartet from Philadelphia that made up Boyz II Men were arguable the biggest act on the planet in the early-90s.  Their pop-soul sound took over the radio beginning with 1991's "Motownphilly" and their reign didn't loosen until well into the decade.  Sandwiched between two #1 songs ("End of the Road" and "I'll Make Love to You") was the group's a cappella cover of The Platters' "In The Still of the Night".