Shortly after ''Ghosts I–IV'' was released, Reznor revealed that he was working on yet another "secret project." On May 5, 2008, the project was revealed to be yet another new album. ''[[The Slip]]'' was released online in the early morning hours as a free download at NIN.com as a way for Reznor to show appreciation to his fanbase for their dedication. A CD/DVD of the album was released on July 22, 2008, limited to 250,000 units worldwide, followed by a concert tour to promote it and the rest of the NIN catalog.
In 2009 Reznor announced the end of Nine Inch Nails as a touring entity indefinitely, citing a feeling of monotony and routine. Following the final Nine Inch Nails show in September of 2009, he stepped away from music for a little while, emerging at the end of the year to announce that he was to begin work on some projects for 2010. In February 2010 Reznor began work on an EP for a new project called [[How To Destroy Angels]], featuring himself, longtime collaborator [[Atticus Ross]], and [[Mariqueen Maandig]], a former singer from psychedelic band West Indian Girl. How To Destroy Angels released their self-titled EP for free on June 1, 2010, with a physical release available on July 6, 2010. That same year, [[David Fincher]] asked Reznor and Ross to compose the score for his film ''[[The Social Network Soundtrack|The Social Network]],'' documenting the rise of Facebook. The score, and the film, were released in fall of 2010. The score, as well as the film were met with much praise and accolades including a golden globe win for Reznorand Ross.
On January 7, 2011, Reznor announced that he would once again be collaborating with Fincher by composing the soundtrack to the US film adaptation of the bestselling novel ''[[The Girl With The Dragon Tattoo Soundtrack|The Girl With The Dragon Tattoo]].'' The film is scheduled to be released in theaters in December of 2011.