Ethan Chase (known by the stage name of Ethan Tremblay) is a fictional actor obsessed with Two and a Half Men who appeared in Due Date. He became an actor because of Two and a Half Men, and even created an unofficial website about the show. In the end of the film, he landed the role of Stu in an unnamed episode of Two and a Half Men. Ethan was played by Zach Galifianakis.
Two and a Half Men Wiki