Jake Gyllenhaal in JarheadJARHEAD

In movies, nothing is harder to define than tone, and the tone of Sam Mendes' Jarhead, based on Tony Swofford's Gulf War memoir, is so elusive that, hours after it ends, you might still not know what to make of it. In many ways, the movie is like a two-hour expansion of Full Metal Jacket's first 40 minutes, as the 20-year-old Swofford (Jake Gyllenhaal) and his fellow Marine recruits, pumped up to an almost insane degree, train for their mission in the unbearable desert heat and prepare for battle. In Mendes' film, however, there is no battle for his protagonists to respond to; the war ends while the Marines' bloodlust is still reaching a boil. The film is, in many ways, about the maddening banality of service, and it has resulted in an occasionally maddening movie, but its shifting tones and air of unpredictability make it impossible to shake off; at the finale, you might not know exactly what you've seen, but you certainly know you've seen something.

Simon Pegg and Nick Frost in Shaun of the DeadSHAUN OF THE DEAD, THE GRUDGE, and SAW

Halloween has come and gone, but three horror flicks are currently in theaters and - surprise! - two of them are actually good.

Harry Shearer, Michael McKean, and Christopher Guest in A Mighty WindA MIGHTY WIND

This might sound like an overstatement, but with A Mighty Wind, writer-director Christopher Guest, aided immeasurably by regular co-scenarist Eugene Levy and his cast of brilliant improv artists, has secured his place as the most distinctive voice in American film comedy since the '70s heyday of Mel Brooks and Woody Allen. (And judging by the applause that greeted the film's finale at the screening I attended, I'm not alone in thinking this.)

Black Hawk DownBLACK HAWK DOWN

It has been widely reported that Ridley Scott's war drama Black Hawk Down, originally due later this year, had its release bumped up to qualify for year-end awards consideration and, in theory, serve as a balm for a country forever damaged by the tragic events of September 11. There's no reason to refute this, and there might even be a kind of self-serving nobility in Columbia Studios' decision, yet the film in question is a technically impressive atrocity, one that's perhaps even more heinous in light of last fall's terrorist attacks. Although based on true events and Mark Bowden's well-regarded book, Black Hawk Down is jingoistic, dramatically inert, and sometimes shockingly racist; expect nominations and awards to follow.