I know I'll get butchered by some for the title, but the tension in this film was stupendous. At all the right times, in all the right places, the scares and thrills are there. Sure, it's a hodge-podge of Poltergeist, Exorcist and Paranormal Activity, but each aspect of those movies is accentuated to produce a genuinely frightening combination.
After a family of five moves into a new home, it takes little time to realize something is wrong. Items move, doors close. When one child falls into a coma and the mother hears what sounds like Vin Diesel growling in some Gaelic dialect over the baby monitor, it's time to move despite the fact the father is a disbeliever. Unlike the Jefferson's, moving on up doesn't work for this family and the frights return like ghost herpes.
While creative license was necessary to move the story along, the astral plane concept is not completely embraceable. Nonetheless, the rest of the movie hits on all cylinders. Visually there isn't a lot, but what is presented works very effectively. All the scare techniques (e.g. eerie noises, well chosen music accompaniment, quiet-to-loud shocks, quick reveal scares) are expertly crafted and executed. Epic timing on more than one occasion. None of the actors really stand out, and a few (a Ghostbusters reproduction) were somewhat silly, but Lin Shaye must be recognized for her interesting performance as a medium who ties the entire movie into a sleep-stealing knot.
Impressed from beginning to end by this movie, I applaud the return to old fashioned, suspenseful horror that doesn't need a teenage sacrifice in a brothel, hostel, or abandoned building. Not saying I dislike those, but Insidious is good for the change of pace. The second half of the film is much slower than the terrifying first half, but if you've recently asked yourself, "Whatever happened to the slow build up?" Watch this in a dark theater with a great speaker system. Guaranteed thrills.