Dennis Cahill

RolesArtistic Director

Dennis Cahill is a Calgary-based improviser, director, and teacher who has been a founding member of Loose Moose Theatre Company since 1977 and has served as its Artistic Director since 1998, succeeding Keith Johnstone. The longest-serving leader of the institution that originated Theatresports, Maestro, Gorilla Theatre, and Life Game, Cahill is a certified director of all Keith Johnstone formats through the International Theatresports Institute and has trained performers and teachers from around the world who travel to Calgary specifically to study the Johnstone tradition at its source.

Dennis Cahill became a founding member of Loose Moose Theatre Company in Calgary in 1977, joining the company that Keith Johnstone established at the University of Calgary with Mel Tonkin following Johnstone's departure from the Royal Court Theatre in London. This founding membership placed Cahill at the origin point of the entire international Theatresports tradition, as Loose Moose was the institution in which Johnstone developed the competitive improvisation format and its successors. The company's foundational formats (Theatresports, in which two teams compete with scenes judged by audience referees; Maestro Impro, a rotating leader format; Gorilla Theatre, performed outdoors or in informal settings; and Life Game, an interview-based biographical improvisation) were all developed through the Loose Moose ensemble during the years Cahill was a member.

Cahill has performed and directed at Loose Moose for more than forty-five years, becoming the institution's through-line across multiple leadership transitions. In 1998 he was appointed Artistic Director, succeeding Johnstone himself in the company's primary leadership role. Since that appointment, Cahill has been the primary custodian of the Loose Moose institutional tradition and the direct inheritor of Johnstone's artistic and pedagogical leadership.

Cahill holds certifications as a director in all of the Keith Johnstone formats licensed through the International Theatresports Institute (ITI), including Theatresports, Maestro Impro, Gorilla Theatre, and Life Game. He serves as a board member of the ITI, connecting his individual practice to the international licensing and training infrastructure that governs the Theatresports network across dozens of countries. He has served on the faculty of the Citadel/Banff Centre Professional Theatre Program and as Principal Instructor of the International Improvisation School in Calgary since 1989, training Canadian professional theater practitioners in the Johnstone methods. He has toured extensively as a performer and master teacher in Europe, Australia, New Zealand, Japan, and the United States, carrying the Loose Moose and Johnstone methodologies to international improv communities, training programs, and festivals. His work as an international workshop leader has brought practitioners to Calgary for intensive study and taken the Johnstone tradition to improv communities that have built their own Theatresports operations within the ITI network.

Historical Context

Loose Moose Theatre's founding in Calgary in 1977 established the company as the original institutional home of all formats Keith Johnstone developed after his departure from the Royal Court Theatre and the London theatrical mainstream. Theatresports, Johnstone's competitive improv format in which audiences vote on scenes, originated at Loose Moose and subsequently spread to dozens of countries through the International Theatresports Institute's licensing network. Cahill's four-plus decades with the company, including more than twenty-five years as its Artistic Director, have made him the primary institutional custodian of this tradition and the through-line between Johnstone's active leadership of the company and its ongoing operation.

The Calgary improv community that developed around Loose Moose operates in a tradition distinct from the Sills-Spolin-Close lineage that produced Second City and ImprovOlympic in Chicago. Johnstone's approach emphasized status, spontaneity, and the theatrical potential of the ordinary rather than the game-based ensemble thinking that characterized the Chicago tradition. Cahill's sustained practice and teaching within this tradition has preserved its specific emphases and transmitted them to practitioners who study with him specifically to access the Loose Moose method at its source institution. Cahill's 1998 succession to the Artistic Director role was a critical institutional moment, establishing that Loose Moose's artistic direction would remain within the founding Johnstone tradition rather than transitioning to a successor organization with a different orientation.

Legacy

Dennis Cahill's tenure as Artistic Director of Loose Moose Theatre has made him the most continuous institutional representative of Keith Johnstone's performance and pedagogical tradition in its original Calgary setting. Practitioners from international improv communities who seek direct training in the Theatresports tradition have traveled to Calgary specifically to work with Cahill and the Loose Moose company, making the Calgary institution a destination for the Johnstone lineage in the same way that iO Chicago functions for the Harold tradition.

His role as a board member of the International Theatresports Institute and his teaching at the Citadel/Banff Centre Professional Theatre Program have extended his influence into formal theater training contexts, connecting Loose Moose's work to the professional training infrastructure that prepares Canadian stage actors and directors. The company's survival and continued operation for more than forty-five years, through multiple venue changes and economic pressures, reflects the organizational leadership Cahill has exercised alongside his artistic role. His stewardship of the Theatresports formats and his international touring as a master teacher have ensured that the Johnstone tradition remains accessible to practitioners across the global improv community rather than becoming an exclusively Calgary-local phenomenon.