Best Collabos

I was listening to Ares and I was thinking how good this one song's collabo was. So just list what yall think are some of the best collabos on a song. Trick is, you gotta say a song where both people actually sang/rapped in the song, not just did the hook. Here a few of mine: "Quiet Storm (remix)"- Mobb Deep and Lil Kim "Who is She to You?" - Brandy and Usher "I Need a Girl (part 1)" - Diddy, Usher, Loon "Welcome to Atlanta (remix)"- JD, Diddy, Murphy Lee, Snoop Be back wit more.

forgot some Faith Evans w/ Eric Bennet - Georgy Porgy Common w/ Lauryn Hill - Retrospect for Life Naz & AZ- Phone Tap Naz, AZ, and Foxy as the Firm.. - Everything they did...

talib kweli and jean grae- phoenix mos def, pharoh monch, and nate dog- oh no erykah badu and common- love of my life be back with more...