Flicker is a documentary made by Canadian director Nik Sheehan. It premiered in 2008 and is currently showing at theaters around North America. It's built in part around the researches of my friend John Geiger, who recently published an authorative biography of Brion Gysin, the inventor of the dream machine. I make a couple of brief appearances, discussing Gysin's enigmatic genius. And I was lucky enough to have a dream machine in my house for a day while Nik and his crew conducted interviews and related experiments with Gysin's machine.