For me it's gotta be...............

10. Busta Rhymes
9. Obie Trice
8. D-12
7. Joe Budden
6. Ludacris
5. The Diplomats
4. D-Block
3. Jay-Z
2. Eminem
1. 50 Cent

CURRENTLY...it hasn't been remarkably "BLOCKBUSTING" when referring to rap or hip-hop but this is just a quick list, who do you think?