TV Guide Magazine by Maitland McDonagh

If your idea of fun involves zombies, monstrous physical transformations and alien slugs bent on world domination, look no further than James Gunn's gleeful homage to all things gross and horrible actually makes good on the "horror comedy" label by being both flat-out creepy and darkly funny.

The A.V. Club by Scott Tobias

Though it occasionally dips too deep into a well of redneck humor, Slither cleverly exploits the nervous laughter that fills a theater whenever a horror movie gets too frightening to bear.

Entertainment Weekly by Lisa Schwarzbaum

There are times (and plenty of them) when Slither slops over from smart, affectionate homage into unmodulated frat goofiness as Gunn cannibalizes so many horror plots with such high spirits.

L.A. Weekly by Scott Foundas

It's the kind of movie that used to be called "trashy good fun," only there's nothing trashy about it: Gunn, who scripted the 2004 "Dawn of the Dead" remake, is clearly punch-drunk with horror-movie love; Slither is, among other things, a freewheeling homage to "The Blob, Invasion of the Body Snatchers" and just about everything by George Romero.

Variety by Joe Leydon

Slither begins briskly, gradually accelerates and eventually achieves a breakneck momentum that makes the wild ride even more exhilarating.

Empire by James Dyer

Undeniably funny and gooey to boot, Slither may not be groundbreaking but it is a rarity: a horror-comedy that does both its genre-parents proud.

Austin Chronicle by Marc Savlov

Of course, Slither isn't for everyone, but if you've a yen for gallons of grue and a smart, sassy story to boot, you couldn't do better than Gunn's hellishly fun horror show.

Chicago Tribune

Aside from Henry, Gunn's cast is on a collective wavelength. Banks, whose perkiness carries a slightly demented edge, matches up well with Nathan Fillion, who plays the lovelorn police chief.

Chicago Tribune by Michael Phillips

Aside from Henry, Gunn's cast is on a collective wavelength. Banks, whose perkiness carries a slightly demented edge, matches up well with Nathan Fillion, who plays the lovelorn police chief.

Seattle Post-Intelligencer by Winda Benedetti

A funny, freaky, fiendishly good flick that might just find a following beyond the standard cadre of horror fanatics.

Philadelphia Inquirer by Steven Rea

Like "Tremors," only ickier, Slither is a tongue-in-cheek horror flick that skewers the genre while delivering seat-squirming scares.

Village Voice

Gunn doesn't reinvent the wheel but he does tighten its spokes a bit with some terrifying sequences and a witty, deadpan screenplay, and he leaves the audience hungry--for "Slither 2."

The New York Times by Manohla Dargis

While Slither sometimes feels like a monster-mash, what makes it work is how nimbly it slaloms from yucks to yuks, slip-sliding from horror to comedy and back again on its gore-slicked foundation.

Dallas Observer

Slither is what it is, unapologetically, and unlike Gunn's work on "Dawn of the Dead," it's probably too weird to be a crossover hit. Either you've got worms in your heart or you don't.

ReelViews by James Berardinelli

Let's get this straight from the start: Slither isn't great art, but that doesn't mean it isn't good entertainment.

Washington Post by Teresa Wiltz

Slither purports to be a "horror comedy" but in embracing the hybrid, it falls flat, never committing full-out to mining for giggles or gasps.