Macca, Ye, and Rihanna - 65 (did not move me, and I like two of these three)

Nick Cave and Kylie Minogue - 90 (definitely my favorite of the bunch)

Queen and 5ive - 80

As for collaborations I never saw coming, Garth Brooks playing "Hard Luck Woman" on the Tonight Show with KISS has to rank highest. He recorded the song on a tribute album, but seeing him with Paul and Gene was jarring, to say the least.