While Hip-Hop breeds a culture of independence and entrepreneurship, it's also a game full of amazing artists who wouldn't have been heard if it were not for friends & believers already in the industry who recognized their talent before anyone else. The right co-sign in Hip-Hop can be just the springboard needed to turn an underground MC into a superstar, or bring a fallen rapper back from the dead.

Even a simple gesture like letting a newbie rap a chorus on a smash song, or letting them shine onstage during a concert, can do wonders for a career, and indeed most of today's artists are backed and co-signed by industry vets, giving them a stamp of approval.

VladTV presents the Top 25 Greatest Rapper Co-Signers of All Time, a definitive list of who we have to thank for introducing us to our favorite MCs.