Don't think so, his solo album was him singing so...
And I really like Lay Low with the Eastsidaz, Snoop, Masta P. And Bitch Please II wit Dre, Xzibit, Snoop, and Eminem. Both of those hooks are ill.
But my favorite of all time is definitely REGULATE with Warren G. Suprised y'all haven't mentioned it already. Growin up in California that was THE JOINT in the early 90's, true classic.
"We don't need no diamond rings
All we need is a drum like
Fuck it, he can rhyme, I'll sing"