The guest verse holds a legendary level of importance in hip-hop. It's often through featured appearances that new stars are minted and current ones reassert their dominance. The spirits of competition and collaboration are both essential to rap music, and on no occasion are they more at play than during a guest verse.

Over the years, we've witnessed no shortage of excellence features. Nearly 20 years ago, AZ earned a career from his scene-stealing efforts on Illmatic. Flash forward to the turn of the most recent decade and you have Nicki Minaj doing the same on G.O.O.D. Fridays standout, "Monster." Then there are moments like Jay-Z, at the top of his game, owning comrade Memphis Bleek's "Is That Your Chick?" Quite simply, it's always exciting to hear a talent shine outside of the confines and comfort of their own solo work.

After some careful consideration, we've come up with a list that highlights hip-hop's finest guest appearances ever. Remember the first time you heard Eminem on "Forgot About Dre"? We're talking about moments like that. Here's to rap's commitment to rewind-worthy features. These are the 50 Best Guest Verses of All Time.

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