Existentialism is a philosophical movement that emphasizes the importance of individual existence, freedom, and choice. In existentialist theatre, the actor's role is to portray the universal human condition, exploring themes such as life, death, meaning, and freedom.

Marxism is a philosophical and economic theory that emphasizes the importance of class struggle and the role of the working class in history. In Marxist theatre, the actor's role is to reflect the social and economic conditions of their time, exploring themes such as exploitation, oppression, and class conflict.

Postmodernism is a philosophical movement that emphasizes the importance of difference, diversity, and the deconstruction of traditional notions of truth and reality. In postmodern theatre, the actor's role is to deconstruct traditional notions of truth and reality, exploring themes such as fragmentation, multiplicity, and the instability of meaning.

Feminism is a social and political movement that advocates for gender equality and women's rights. In feminist theatre, the actor's role is to challenge traditional gender roles and stereotypes, exploring themes such as patriarchy, sexism, and the oppression of women.

Naturalism is a theatrical and literary movement that emphasizes the importance of realism and the accurate portrayal of everyday life. In naturalist theatre, the actor's role is to create a sense of realism on stage or screen, portraying the characters as they would behave in real life.

Absurdism is a philosophical movement that emphasizes the meaninglessness and futility of human existence. In absurdist theatre, the actor's role is to convey the meaninglessness and futility of human existence, exploring themes such as the absurdity of life, the futility of human endeavor, and the search for meaning in a meaningless world.

Expressionism is a theatrical and artistic movement that emphasizes the expression of inner emotions and psychological states. In expressionist theatre, the actor's role is to portray the inner turmoil and psychological states of the characters, using exaggerated and stylized movements and gestures.

Surrealism is a literary and artistic movement that emphasizes the exploration of the subconscious mind and the world of dreams. In surrealist theatre, the actor's role is to explore the subconscious mind and the world of dreams, creating a sense of wonder and awe in the audience.

Dadaism is an artistic and literary movement that emphasizes the rejection of traditional notions of art and theatre. In dadaist theatre, the actor's role is to challenge traditional notions of art and theatre, creating a sense of chaos and disorder in the audience.

Epic theatre is a theatrical movement that emphasizes the use of non-realistic techniques to create a sense of distance between the audience and the characters. In epic theatre, the actor's role is to educate the audience about social and political issues, using non-realistic techniques to create a sense of alienation and detachment.

Method acting is a technique of acting that emphasizes the use of the actor's own personal experiences and emotions to inform their performance. In method acting, the actor draws on their own personal experiences and emotions to create a believable and authentic performance.

Stanislavski's system of acting is a technique of acting that emphasizes the importance of creating a believable and authentic performance. In Stanislavski's system of acting, the actor analyzes the script and the character in depth, and uses their own personal experiences and emotions to inform their performance.

Brecht's epic theatre is a theatrical movement that emphasizes the use of non-realistic techniques to create a sense of distance between the audience and the characters. In Brecht's epic theatre, the actor's role is to educate the audience about social and political issues, using non-realistic techniques to create a sense of alienation and detachment.

Grotowski's poor theatre is a theatrical movement that emphasizes the use of simple and essential elements to create a powerful and moving performance. In Grotowski's poor theatre, the actor's role is to create a sense of intimacy and immediacy between the audience and the actors, exploring the actor's own personal experiences and emotions.

Artaud's theatre of cruelty is a theatrical movement that emphasizes the use of extreme and violent imagery to create a visceral and emotional response in the audience. In Artaud's theatre of cruelty, the actor's role is to create a sense of shock and awe in the audience, challenging traditional notions of theatre and performance.