Joel David Moore is an American actor, director, producer, and screenwriter, best known for his role as Dr. Norm Spellman in James Cameron's Avatar film series (2009, 2022), where he portrayed the motion-capture scientist operating an avatar body. Born and raised in Portland, Oregon, Moore developed an early interest in acting and studied the craft in college before relocating to Los Angeles to pursue a professional career in film. His breakthrough came with the role of Owen Dittman in the 2004 comedy Dodgeball: A True Underdog Story, which showcased his comedic timing and launched him into supporting roles in films like Grandma's Boy (2006), Art School Confidential (2006) directed by Terry Zwigoff, and the independent horror film Hatchet (2006). Moore's career expanded into directing and screenwriting, with early collaborations in independent cinema, including a writing partnership and professional collaborations with Jeremy Boreing, whom he also considers a personal friend. These efforts contributed to his work in low-budget productions and genre films, such as his directorial debut with the 2011 film Trespassers. He has continued to appear in television and film, maintaining a steady presence in Hollywood's character actor circuit, often taking on quirky and memorable supporting roles. Moore's versatility has allowed him to navigate both mainstream blockbusters like Avatar and niche independent projects, reflecting his roots in Oregon's creative scene and his adaptability in the competitive Los Angeles entertainment industry.