Broadway theatre | Calgary | West End theatre | musical theatre | Royal National Theatre | theatre | Royal Court Theatre | American Ballet Theatre | University of Calgary | Musical theatre | National Theatre | Theatre Royal, Drury Lane | Bolshoi Theatre | Abbey Theatre | Haymarket Theatre | Theatre Royal | Play (theatre) | Globe Theatre | Theatre | Mariinsky Theatre | Manhattan Theatre Club | Lyric Theatre | Calgary Stampeders | Théâtre du Châtelet | Her Majesty's Theatre | Grand Théâtre de Genève | Théâtre des Champs-Élysées | Theatre 625 | Goodman Theatre | Sydney Theatre Company |
As an actress, Northan has worked in theatres across Canada including Theatre Calgary, Manitoba Theatre Centre, Fringe Theatre Adventures (Edmonton), Quest Theatre (touring theatre for young people) and Alberta Theatre Projects where she appeared in the Fall Ensemble and playRites, a festival of new Canadian Work.
He also worked in several local comedy clubs with friends Oldring, Albert Howell and Graeme Davies and performed with Theatre Calgary.
Matthew Spangler's plays have been produced by the San Jose Repertory Theatre, Arizona Theatre Company, Actors Theatre of Louisville, Cleveland Play House, San Diego Repertory Theatre, New Repertory Theatre, Theatre Calgary, Citadel Theatre, La Jolla Playhouse (staged reading), the Nottingham Playhouse, Liverpool Playhouse, Brighton Festival, the National Steinbeck Center, the Edinburgh Fringe Festival, and the Avignon Theatre Festival, in addition to other theatres and festivals.