A Scanner Darkly (2006)

Cast: Keanu Reeves, Robert Downey Jr., Woody Harrelson, Winona Ryder, Rory Cochrane, Mitch Baker, Sean Allen, Cliff Haby, Steven Chester Prince, Natasha Valdez

An undercover cop in a not-too-distant future becomes involved with a dangerous new drug and begins to lose his own identity as a result.…