Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Diego Klattenhoff is a Canadian actor best known for playing Derek in Whistler and Ivan in Men in Trees. Diego Klattenhoff studied with some of Canada's most respected acting coaches, including David Rotenberg, Bruce Clayton and Rae Ellen Bodie, and eventually his dedication and persistence paid off. Diego Klattenhoff's first big break was in Mean Girls, starring Lindsey Lohan and Rachel McAdams. Mark Waters directed this cult favorite. Additional credits for Diego Klattenhoff include guest starring roles on numerous films, movies of the week, and television series such as Smallville, Psych and Supernatural as well as recurring roles on Men in Trees and 24 Diego Klattenhoff also appeared as a series regular on Canada's CTV's Whistler and starred in JJ Abrams' pilot, Hope Against Hope.