After watching the trailer, I thoguth wow some one is going to tget sued here that looks so like Keanu Reeves. As it turns out it was him I had not heard any thing about "A Scanner Darkley" befor some one sent me the link to the trailer, but from what I have seen I would not mind seeing more.
Set in a future world where America has lost the war on drugs, an undercover cop, Fred, is one of many agents hooked on the popular drug Substance D, which causes its users to develop split personalities. Fred, for instance, is also Bob, a notorious drug dealer. Along with his superior officers, Fred sets up an elaborate scheme to catch Bob and tear down his operation.