"You're the One That I Want" and "Summer Nights," both performed by John Travolta and Olivia Newton-John in the movie musical "Grease," and Elaine Paige and Barbara Dickson's duet of "I Know Him So Well" from the first recording of Chess, made the Top 10 list, which follows. 1. John Travolta and Olivia Newton-John -- "You're The One That I Want"
2. John Travolta and Olivia Newton-John -- "Summer Nights"
3. Puff Daddy and Faith Evans -- "I'll Be Missing You"
4. Jason Donovan and Kylie Minogue -- "Especially For You"
5. Elton John and Kiki Dee -- "Don't Go Breaking My Heart"
6. Windsor Davies and Don Estelle -- "Whispering Grass"
7. Elaine Paige and Barbara Dickson -- "I Know Him So Well"
8. Paul McCartney and Stevie Wonder -- "Ebony And Ivory"
9. David Bowie and Mick Jagger -- "Dancing In The Street"
10. Phil Collins and Philip Bailey -- "Easy Lover"

The Official Charts Company is a joint venture between the BPI (The British Recorded Music Industry) and ERA (Entertainment Retailers Association). It is responsible for the commissioning, marketing, distribution and management of the U.K.'s official music and video charts.