What initially started off as a slick exchange of words between Jay Z's right-hand manMemphis Bleek and Nas affiliate, Prodigy, grew into a full-blown beef. Jay Z spoke up first on Hot 97's Summer Jam in 2001, reciting the opening verse to "Takeover" on stage, a clear diss to Nas and Mobb Deep.
Nas responded shortly thereafter with "Ether." Over the next four years comments were made both on- and off-record until the pair finally squashed the beef in 2005 when Jay brought out Nas as a surprise guest at his comeback concert, "I Declare War."
(Photo: Scott Gries/Getty Images for Universal Music)