FALLUJAH, Iraq — Placing his portable DVD player on an empty ammunition can, Marine Lance Cpl. Matthew Smith, 20, of Powder Springs, Ga., is set to watch his favorite movie: "A Few Good Men."

He likes the way Tom Cruise, playing the brash Navy lawyer, stands up to the Marine brass who are willing to let two enlisted Marines go to prison rather than tell the truth about the death of another Marine in a barracks hazing.

Then again, he likes Jack Nicholson's stiff-necked colonel and can recite long passages of the colonel's bombastic dialogue, including the famous "You can't handle the truth!"

Like many of his comrades in uniform, Smith is a movie buff ("I'm a big Ben Stiller fan," he says). And now there's no reason he has to abandon his passion for cinema just because he's in a war zone.

Just as the nature of war has changed because of technology, so has the kind of entertainment favored by the troops. Four tours as an embedded reporter with Marines from Camp Pendleton, Calif., have given me an opportunity to gauge these changes. In Afghanistan after Sept. 11, the most common piece of off-hours gear seemed to be the portable CD player with headphones. During the assault on Baghdad in 2003 and then again last spring during the first assault on Fallujah, digital cameras and laptop computers were the rage.

Now, hands down, it's the DVD player, sometimes with its own tiny screen, sometimes hooked to an available television. A variety of brands are for sale in the larger U.S. bases here.

Hollywood has come to the front line, in real time, in living color.

"You get tired of just playing spades or just sitting around," said Cpl. Ronnie Hunter, 28, of Olympia.

In a recent tour of three front-line companies, I found a greater selection of fare than at my neighborhood multiplex back home. Every tent or living space in a bombed-out building being occupied by Marines seems to have at least one DVD player and an informal library.

With a major and a first sergeant, I watched "EuroTrip" and "DodgeBall." As the major predicted, the song from "EuroTrip," "Scotty Doesn't Know," is now embedded in my head.

With Marine snipers, I enjoyed the first season of the Fox TV series "24." Also, some episodes of "Friends" and part of "Lord of the Rings."

Would it be surprising to learn that young Marines prefer action movies? They do.

"It makes me not think about what's going on for a while," said Sgt. Lawrence O'Connor, 25, of Indianapolis, as he watched his favorite, "Conan the Barbarian."

Sgt. Jose Nazario, 25, of Brooklyn, N.Y., said he had been able to stay more current in his movie watching than pals back home. "I call home and say, 'Have you seen that movie yet?' " he said. "I tell 'em, 'I've seen it all the way out here.' "

Swapping movies is a popular activity. On patrol, a Marine in one Humvee inquires of a Marine in another Humvee: "Hey, when are you going to loan me 'Team America'?"

It is not unusual to hear to-the-point critiques. Such as this conversation between Marines standing in line for gas-mask inspection: "What was the name of that movie we watched last night?"

" 'Lost in Translation.' "

"Was that like a chick flick or something?"

"Noooo!"

"Then why didn't Bill Murray bag that chick at the end?"

"Because he's a decent dude, that's why."