Review: How do you startle the audience for the Saw movies, who have by now seen just about everything in terms of horror, gore and torture? In the opening scene of Saw IV, the answer is: Give 'em a lingering look at Jigsaw's genitalia, as his dead body lies on a morgue autopsy table. Whether or not these are Tobin's balls or the cadaver is a prosthetic mockup is uncertain, because the movie very quickly demonstrates how advanced the state of the art is when it comes to makeup FX, as the deceased villain's scalp is peeled off, his skull cut open and his brain removed. Francois Dagenais, who created this wet work and also contributed to the previous sequels, has been an unsung hero of this franchise...[The film has] a better pace than the third film and a few individual setpieces that, even at this point in Saw's history, can still get you squirming. Series regular director Darren Lynn Bousman utilizes some really nifty visual transitions that help all the crosscutting go down a little easier, and it's nice to see Bell up and about in those flashbacks...And of course, there's a big twist ending, which isn't as cool as those in the first and second films but is a lot cleaner than the one in part three. The revelation does beg a few explanations--but of course, those will no doubt be addressed in the inevitable Saw V. - Michael Gingold, Fangoria