Jay-Z

Day job: Rapper, producer, not a businessman but a business, man.

Collection type: Contemporary

Collection includes: Andy Warhol, Tim Noble, Sue Simmons, Ed Ruscha, David Hammons, Damien Hirst, Richard Prince, Paul Pfeiffer, Laurie Simmons, Jean-Michel Basquiat, Pablo Picasso

Fun fact: Jay owns a piece by Hirst called "Beat Life and Cheat Death," named after lyrics from his own track, "Pray" (This is why I be so fresh, I'm trying to beat life, 'cause I can't cheat death).