He wrote his first speculative screenplayHeadrush over Christmas 1994 and it was optioned shortly after by Ed Guiney of Element Films. He made his first short film, 7th Heaven, in 1998 and picked up a variety of awards at various festivals around the world. In 1999, he won the Miramax Scriptwriting Award for Headrush. In 2000 he released the feature documentary which he directed, produced, and co-edited about underground cult performer Aidan Walsh. The film went on to win awards and became the first documentary made on video to receive theatrical and video distribution in Ireland. In 2003 he completed Headrush. Again Marcus received awards and positive reviews, but despite the praise of industry bibles such as Variety, the film failed to receive wide distribution. In 2005 he released the film himself across 10 screens in Ireland gaining a modest box office success. Marcus continued experiment with different work, most notably his interpretations of three chapters from James Joyce's Ulysses in the feature documentary 'Imagining Ulysses' and his series of commissioned by the Dublin Theatre Festival to celebrate their 50th Anniversary. Marcus also directed a documentary for RTÉ's U2 Night, and a music videos for Fun Lovin' Criminals, Snow Patrol, Gavin Friday, Skin, Republic of Loose, and BP Fallon with Jack White. In 2009 he complete his 2nd feature Soulboy. Set against the backdrop of the Northern Soul scene in the North of England in the mid 1970s, the film came 2nd in the Audience Award for Best Film at its premiere at the Edinburgh International Film Festival. The low budget flick proved a hit with critics and was released in the UK in September 2010. The Guardian called it The Comeback Kid for punching above its weight at the box office. His second feature documentary Good Cake, Bad Cake about the Irish band LiR and their quest to make it in the music business also received very strong reviews on its limited release. Since then he has gone on to make two more award-winning Short Films, Rhinos, and Hannah Cohen's Holy Communion. In 2014 he set up Bow Street Academy for Screen Acting in Smithfield, Dublin, where he is Artistic Director.
