It is just me, or does it seem that James Jamerson Always added a little extra swagger on the duets he played on. His virtuoso intertwines on so many of them.

Marvin & Tammi- Ain't No Mountain High Enough, Ain't Nothing Like the real thing, What You Gave Me[[The female vocalist may be disputed, but the bassist sure isn't)
The Supremes & The Temps- I'm Gonna Make You Love Me, Stubborn Kind Of Fellow
Edwin & Blinky- You've Made Me so Very Happy
David & Jimmy- When My Love Hand Comes Down
The Supremes & Four Tops- just about every song!