Michael Douglas and Catherine Zeta-Jones may have 25 years separating them, but they've managed to withstand a decade of marriage something rarely accomplished by Hollywood couples of any age. Douglas proposed to Zeta-Jones on New Years' Eve in 1999 and their son, Dylan was born less than a year after (daughter, Carys arrived three years later). But despite early whispers about heated pre-nuptial agreement negotiations and family differences, the pair seem to be going strong in the face of significant trials like Douglas' treatment for throat cancer in 2010, his son Cameron's incarceration and Zeta-Jones' recent bipolar disorder diagnosis.