Zombieland is a "thoroughly enjoyable horror comedy hybrid," said Perri Nemiroff in Cinema Blend. Woody Harrelson is "nothing short of awesome" as the leader of "band of misfits," the sole human survivors in a post-apocalyptic American wasteland inhabited by killer zombies. "Zombieland (watch the trailer) is filled with the horror genre's standard overdose of blood and guts," and it's "disturbing, thrilling, hilarious and sweet, all at the same time."

There are plenty of "well-deserved" laughs in Zombieland, said Alonso Duralde in MSNBC.com, which "takes a page from Shaun of the Dead and reboots the zombie apocalypse as a staging ground for hilarity." But "despite strong performances and a terrific visual style," Zombieland is "hit-and-miss"—there are too many "dead spots" and the movie "doesn't always live up to its own dizzying potential."

It's also "directed with little ambition and even less distinction by first-timer Ruben Fleischer," said Scott Foundas in The Village Voice. The film's "zombie mayhem" is "ho-hum," and its "comic tone becomes increasingly strained." And that also goes for the "indulgent movie-star cameo by a certain deadpan genius usually more discerning in his choice of projects. Who ya gonna call? How about John Carpenter?"

Also opening this week: A Serious Man, The Invention of Lying, Whip It