Prime Nas and Prime Prodigy with Havoc production (no rapping for Havoc)...
Prime Nas, Prime Prodigy, Prime Raekwon and Prime Ghostface Killah on Classic Wu-Style production (RZA, 4th Disciple, Tru Master)
2Pac and Snoop Dogg, 2Pac and DMX, 2Pac and "Ready To Die" Biggie...
Mase and Jada Kiss
2Pac and Kanye West on MBDT type production...
ODB and Method Man on classic Wu-style production...