You don't have to be on drugs to enjoy 'John Dies at the End' -- I wasn't and I did -- but it certainly wouldn't hurt. Its frenzied, cockeyed logic, brain-twisting philosophical discussions, and bargain basement psychedelic special effects would all look better high. 'John Dies at the End' is kind of like 'Ghostbusters' if 'Ghostbusters' was about a pair of slackers who take weird drugs to see and kill ghosts rather than a bunch of Columbia University scientists. Through their extensive use of a mysterious and possibly sentient substance known as "Soy Sauce," Dave (Chase Williamson) and John (Rob Mayes) are able to see into the future, the past, and alternate universes, and even to commune with the dead. They occasionally save the world, pharmacological stupors permitting.