Sam Eldessouky has been named senior vice president and corporate controller, Valeant Pharmaceuticals. Mr. Eldessouky has more than 20 years of experience in accounting and finance, and joins the company from Tyco International, where he most recently served as senior vice president, controller and chief accounting officer.    Mr. Eldessouky will be responsible for directing global accounting and financial reporting activities to ensure accurate and timely compliance with all internal and exte...