Odd Musical Collaborations, that worked (last century), from an old fart's point of view

Shirley Bassey + Propeller Heads "History Repeating Itself" (1997)
Run-DMC + Aerosmith "Walk This Way" (1986)
Dusty Springfield + Pet Shop Boys "Nothing Has Been Proved" (1989)
Tammy Wynette + KLF "Justified & Ancient" (1991)
Liza Minnelli + Pet Shop Boys "Results" album (1989). I think I was the only one who bought it in Australia (found it in a bargain bin of cassettes).
Bing Crosby + David Bowie "Little Drummer Boy" (1977)
David Bowie + Pet Shop Boys "Hallo Space Boy" (1996)

Any suggestions?