Planet Rock - Soul Sonic Force
Pack Jam - The Jonzun Crew
Flamethrower Rapp - Felix and Jarvis
Scorpio - Grandmaster Flash
What People Do For Money - Divine Sounds
The Challenge - Dr. Jeckyl and Mr. Hyde
Ya' Mama - Wuff Ticket
Funk You Right On Up - The Sequence
The Breaks - Curtis Blow
Request Line - Rockmaster Scott & The Dynamic Three
Electric Kingdom - Twilight 22
Freestyle Express - Freestyle
Fix It In The Mix - Pretty Tony
Computer Age (Push The Button) - Newcleus
Nasty Rock - Garrett's Crew
Nasty Rock - P Crew
Space Is The Place - The Jonzun Crew
Space Is The Place - Newcleus
Looking For The Perfect Beat - Soul Sonic Force
Can You Rock It Like This - Run DMC
We Are Whodini - Whodini
Jam The Box - Pretty Tony
The Party Has Just Begun - Freestyle
Jam On Revenge - Newcleus
Genius Rap - Dr. Jeckyl and Mr. Hyde

A good thread to refer to ".. Greatest Hip-Hop Albums of All Tiime" here.