During the 2000s he produced many documentaries, mostly for the ABC. In 2005, his SBS documentary "Yellow Fella" was screened in the section "Un Certain Regard" at the Cannes International Film Festival. In 2009, the Message Sticks Indigenous Film Festival held at the Sydney Opera House saw the world premiere of Sen's "Fire Talker", a documentary biopic about political activist, Aboriginal footballer, and statesman Charlie Perkins. Sen used the TV revenue from these works to finance the production of his second feature-length film, "Dreamland", which screened at the 2010 Busan International Film Festival and Melbourne International Film Festival.