One of Rosen's earliest film roles, if not his first was playing a white rapist in The Hymens Parable which was directed by Jon Springer.[3] Then he appeared as Eddie in the Bill Semans directed Herman U. S. A. which was released in 2001.[4][5]
In an International Business Times article about the film Five Days Gone, it said that he bestowed the film with a passionate, memorable performance as the drug addicted boyfriend of Alice (played by director Anna Kerrigan.[6][7] He was the lead actor and co-writer of the Brady Kiernan directed film Stuck Between Stations. The film which premiered at the Tribeca Film Festival in New York, was about a man and a woman who meet after a fight in a nightclub, who start talking and realize that they have some common history.[8]