Catherine Zeta-Jones and Michael Douglas are two of the most famous stars in Hollywood – so it comes as no surprise that they often have celebratory work news.MORE: Catherine Zeta-Jones and Michael Douglas mark emotional family milestoneMost recently, during their Spanish vacation at their holiday home in Mallorca, the couple marked a big day involving Michael's latest project.Taking to Instagram, the father-of-three shared footage of himself standing in the kitchen of their mansion, looking