Its Yours - T. La Rock and Jazzy Jay.
A Chorus Line - Ultramagnetic MCS
Rebel without a Pause - Public Enemy
The Symphony - The Juice Crew
Dope Fiend Beat - Too $hort
My Minds playin tricks on me - Geto Boys
Squeeze the Trigger - Ice T
Style Wars - Hijack
Serve tea then murder - Hardnoise
So Watcha Sayin - EPMD
Follow the Leader - Eric B and Rakim
Fuck Tha Police - NWA
Royal Flush - Rotten Apple
The Final Chapter - Comptons Most Wanted
Brand Nubian - Punks jump up to get beatdown
Live at the Barbaque - Main Source with Nas and Akynele
Broken Language - Smoothe Da Hustla and Trigga da Gambla
Siccmade - Bro Lynch
Deadly Game - C-Bo
i cant be arsed to list any more, needless to say there isnt one defining classic, there are many.