Unlike 50 Cent, Busta Rhymes jumped on a track with Eminem few times. “Calm Down,” “I’ll Hurt You,” and “Touch It (Remix, Live at BET Awards)” also featuring Mary J. Blige, Rah Digga, Missy Elliot, Lloyd Banks, Papoose, DMX and “Hail Mary,” also featuring 50 Cent, which is a diss-track…