Possible Clues:

• 'Forgot About ___' (2000 rap hit)
• "Forgot About ___" (2000 single featuring Eminem)
• 'Dr.' who raps
• Dr. who 111-Down
• Death Row Records founder, casually
• Anthony Anderson's 'Black-ish' role
• Eminem collaborator, informally
• Rap star Dr. __
• ''Let It Ride'' artist, for short
• Dr. of G-funk