Location: Saddle River, New Jersey
Price: $10 million

It comes as no surprise that this Def Jam co-founder lives pretty extravagantly. In a home that boasts 35,000 square feet, over 10 bedrooms, 12 bathrooms, a library, home gym, movie theater, and meditation room, we're sure this mogul had a tough time balancing business and pleasure. The home was sold two years ago.