Spolin Center, The - Dedicated to promoting Viola Spolin. News, articles, links and audios. Staircase, The - Improv explanations and details about structure. Information about performances, workshops, and bookings. Joya Cory Workshops - Beyond comedy improv, this training activates full emotional and physical range to create tmmediate theatre of authenticity and substance. Angel City Improv - Quality professional interactive improvisational theater and instruction to folks of all ages in the Twin Cities area of Minnesota. ImprovWorks - A nonprofit theater arts organization. Information on performances, classes, and workshops. San Francisco. Centre for Playback Theatre - International school for Playback Theatre; information on instructors, training schedules, and playback resources. Paul Sills’ Wisconsin Theater Game Center - Teaches theater improv based on the work of Viola Spolin. Located in Door County Wisconsin.