Think of it this way, if there is no Redman there would be no Eminem. Redman was and still is one of Eminem's biggest musical influences and for obvious reasons. Many could also argue that Redman deserves to be higher up on the list and that's totally understandable. After being discovered by Erick Sermon of EPMD fame, Redman's music career took off and he never looked back. Bar for bar, there are few hip-hop artists that can be compared or that would want to hop on a track with the Newark, New Jersey rapper.
After linking with former Wu-Tang Clan rapper, Method Man, the two went on a tear musically and visually releasing projects in the form of movies and albums like the 1999 LP, Blackout! And Blackout! 2 that released a decade later. Their movie How High has become a stoner classic and makes an appearance on television from time to time. Redman is just now getting his recognition from the masses as one of the greatest to ever do it and he's a treasure to the culture.