After appearing briefly in Cameron Crowe's Oscar-winning film Almost Famous, Baruchel won the role of Steven Karp on Judd Apatow's acclaimed yet short-lived television series Undeclared, where he starred alongside Seth Rogen, Carla Gallo, Charlie Hunnam and Monica Keena.
Efter at have medvirket kort i Cameron Crowes Oscar-vindende Almost Famous fik Baruchel rollen som Steven Karp i Judd Apatow's anmelderroste endnu kortlivede tv-serie Undeclared, hvor han medvirkede sammen med Seth Rogen, Carla Gallo, Charlie Hunnam og Monica Keena.