While many would argue that the sequel (which is also sort of a remake at the same time) is vastly superior to the much scrappier original film, it seemed wrong to include one without the other. Evil Dead is a brilliant micro-budget masterpiece about a group of poor saps who awaken a bunch of demons. The sequel is pretty much the same thing, only with a slightly bigger budget and a dark, twisted sense of humor. There's no choosing between the two. (Also feel free to finish off the trilogy with 1992's Army of Darkness.)