3. Dr. Dre feat. Eminem, "Forgot About Dre" (2000)
Despite its origins as a hard-nosed diss track torching Suge Knight – written in secret and presented to Dr. Dre by Eminem – "Forgot About Dre" became the artist/producer/A&R visionary's career capstone, winning a Grammy and achieving pop-culture ubiquity five years after his last Top 40 hit. "People were saying that I didn't have it anymore and that I hadn't made a good record in years," Dr. Dre told Rolling Stone at the time. "I just can't ignore that shit. … Now what do you people have to say?" The creeping-outside-your-window ambience he conjures – like a tightly plotted big-screen adaptation of the Dungeon Family's vividly sprawling vignettes – possesses an almost stately, imminent threat. This song a rap fan wrote for a pioneer also might be Eminem's crowning validation. The artful verse structure he creates for both himself and his mentor allows them to spit scorn or self-affirmation in perfectly calibrated declaratives or dazzling double-time. Plus, Em voices the unforgettable chorus in a battle-rap rat-a-tat that effortlessly ferries a dizzy melodic swoosh.