Now, this film is not everyone's cup of tea, but if you had read Philip K. Dick's novel before, you might agree that the film did the book justice. Especially the bit about the mountain bike! Cheapest elsewhere is about £11, so this isn't a bad price.
Details: A Scanner Darkly is set in suburban Orange County, California in a future where America has lost the war on drugs. When one reluctant undercover cop is ordered to start spying on his friends, he is launched on a paranoid journey into the absurd, where identities and loyalties are impossible to decode. It is a cautionary tale of drug use based on the novel by Philip K. Dick and his own experiences. Like a graphic novel come to life, A Scanner Darkly uses live action photography overlaid with an advanced animation process (interpolated rotoscoping) to create a haunting, highly stylized vision of the future.