Rick Rubin is one of music's greatest producers. It's hard to choose a best of because he has so much to work with! Rubin co-founded Def Jam Records with Russell Simmons and also helped to introduce the world to acts like Run DMC, Public Enemy, The Beastie Boys and LL Cool J. Later he worked with acts like Red Hot Chili Peppers, U2, Green Day, Audioslave and Linkin Park.

Along with those above mentioned groups, his work has transcended age and genres and Rubin has gone to work with the greats in music outside of Hip Hop and Alternative music including Johnny Cash, Neil Diamond and Metallica. He is now the co-head at Columbia Records.

Here is my list
"Californication" - Red Hot Chili Peppers

"Beverly Hills" - Weezer

"By The Way" - Red Hot Chili Peppers

"Stop F**kin With Me" - Lil Jon & The East Side Boyz

"Better Than I've Ever Been" - Kanye West, KRS One, Nas

"Rock The Bells" - LL Cool J

"Fight For Your Right" - Beastie Boys

"Walk This Way" - Run DMC feat. Aerosmith

"99 Problems" - Jay-Z

"Paul Revere" - Beastie Boys

"Tell Me Baby" - Red Hot Chili Peppers

"The Saints Are Coming" - U2 & Green Day

"Down There By The Train" - Johnny Cash

"Give It Away" - Red Hot Chili Peppers

"Closer" - Nine Inch Nails