Well-known in Vancouver as a cultural advocate, Marcus has been artistic director of one of the city’s best-known indie producing companies, Neworld Theatre, since 2005. He was the inaugural chair of Vancouver’s Arts and Culture Policy Council, co-chaired the Vancouver municipal political party the Coalition of Progressive Electors.  In 2009, Marcus co-founded of Progress Lab 1422, a 6,000 s.f., collaboratively managed rehearsal and production hub in East Vancouver shared by Neworld and three other established independent companies. Marcus has served as an assistant professor at Concordia University in Montreal and on faculty at Capilano University in North Vancouver, where he implemented Canada’s first collaborative, interdisciplinary Bachelors’ degree in Performance, offered jointly with Douglas and Langara Colleges. Marcus lectures widely, and still teaches regularly at Langara’s Studio 58, the University of British Columbia, and the National Theatre School. Marcus graduated from NTS's Acting Program and holds an MFA from UBC. 

Marcus’ dozen or so plays, some of which were co-written with friends and colleagues, include Winners and Losers, Leftovers, Jabber, How Has My Love Affected You?, Ali & Ali and the aXes of Evil, Everyone, 3299: Forms in Order, Adrift, Peter Panties, Chloe’s Choice and A Line in the Sand. Though widely varied in terms of style and content, they often some way investigate fundamental questions of difference or “otherness.” They have been performed at theatres and festivals (and school gyms) across Canada, the US, Australia and Europe, including: the Dublin Theatre Festival, Soho Rep (Off-Broadway), Festival Trans Ameriques, PuSh Festival (four times), Foreign Affairs (Berlin), the Brighton Festival (UK), LOKAL (Reykjavik), the Vancouver Art Gallery, Canadian Stage, Wooly Mammoth and the Kennedy Centre (Washington, DC), Tarragon, Factory, the Caravan Farm Theatre, the Arts Club, the Citadel, Noorderzon (Netherlands), Ca Foscari (Venice), Brno Festival (Czech), Aarhus Festival (Denmark), On the Boards (Seattle) the Magnetic North Festival (five times), and many others.