Mark Gallagher is a film scholar and academic whose work examines screen acting, stardom, gender, and popular cinema. He is the author of *Cosmosexuals: Screen Acting, Stardom, and Male Sex Appeal*, published by the University of Texas Press in 2025, which analyzes how male sex appeal is constructed and circulated through performance, celebrity culture, and global media industries. Gallagher’s research focuses on acting styles, star personas, masculinity, and the relationship between bodies, performance, and audience reception across film and screen media. His scholarship draws on film theory, cultural studies, and close analysis of screen performances to situate stardom within broader social and industrial contexts. In addition to his book-length work, he has contributed academic writing and teaching related to cinema studies, performance analysis, and contemporary screen culture.