10. Something Stupid Like I Love You by Robbie Williams and Nicole Kidman
Actually, this song was written and first performed by C. Carson Parks in 1967, and later on covered and performed by many artists including Frank and Nancy Sinatra. In 2001 it was reawakened by Robbie Williams and Nicole Kidman when it reached the top of charts once again. So, if your choice for karaoke male-female duet would be a love song, this one is good to start with.