25. "Rap God" (2013)
Rap God" is a mind-boggling, seething testament to Eminem's own legacy, the rapper executing one acrobatic lyrical trick after another to demonstrate, chronicle and critique his hip-hop lineage. However he seems to shrug whenever he talks about the song, which was recorded in one take. He says he barely remembers that session; for him, it was just another day of mapping out multiple internal-rhyme schemes. In the third verse of this six-minute exhibitionistic display, he famously references J.J. Fad's "Supersonic," rapping at a stunning, Twista-level of speed and agility. "Everybody, every time, when they make a song, wants to say: I'm still here. Don't forget about me," Em said to MTV News. Though his pop-culture references have occasionally dated him in the latter part of his career, "Rap God" acknowledges the past with a thrilling freshness.