Read our review of Hunger

It is known simply as The Scene. To those who fêted it at this year’s Cannes Film Festival, and those who have seen it since, it is the breath-taking centrepiece of a film called Hunger that is both politically controversial and philosophically sublime.

It is 23 minutes of whiz-bang dialogue and crackling ideological debate between the movie’s central protagonist, the IRA hunger striker Bobby Sands (Michael Fassbender), and a moderate Belfast priest, Father Moran (Liam Cunningham). The scene includes a 17-and-a-half-minute single shot of the two men – according to Guinness the previous record holder for a single shot on film (rather than video) is an eight-minute scene in The Player meaning that Hunger could be the holder of a new world record.

The scene in the film, to be screened at The Times BFI London Film Festival, is set in the Maze prison meeting room, in 1981, just hours before the 66-day fast that would ultimately kill Sands (Fassbender wastes away on camera, harrowingly, for the final third of the movie), but it bristles with a modern intensity that speaks of contemporary geopolitics and a simple need for human understanding. Mostly, however, it is a masterclass in screen acting from two very different performers.

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Today the chemistry is evident between Fassbender, the young tyro, and Cunningham, the seasoned pro. The latter, at 47, didn’t start acting until he was 29 (he was an electrician in Dublin), but has since brought his own brand of steely-eyed gravitas to everything from First Knight to Dog Soldiers to The Mummy 3. The former, born in Heidelberg to a German father and Irish mother but brought up in Ireland, has suddenly, after a breakout turn as the beautiful Stelios in 300, become the one to watch – he’s next up opposite Brad Pitt in Quentin Tarantino’s Second World War epic Inglorious Bastards.

“I’m 31, and I left drama school here when I was 22, so I don’t know why it’s all happening now,” says Fassbender, sliding into the sofa seat of a West London restaurant, shuffling up next to Cunningham. “Won’t be long before you’re under f***in’ house arrest, like Brad Pitt,” says Cunningham, gently needling him. They joke, too, about The Scene. About meeting each other for the first time in a Belfast pub with Steve McQueen, the director of Hunger, and how they bonded by nipping out for a smoke and, says Cunningham, “some heavy petting”. “Yes,” giggles Fassbender. “We called it The Passion.”

And yet the gravity of the subject matter and the importance of what they’ve achieved slowly takes hold as they describe the reality of shooting a 23-minute scene on specially altered film stock (normal reels hold only ten minutes), that somehow has to sum up the essence of wide-ranging political debate while simultaneously being engrossing, thought-provoking and deeply moving.

Liam Cunningham: I remember Steve [McQueen] on that first day saying: ‘I’m thinking of shooting this scene in one shot’. And my immediate reaction was, ‘Are you out of your f***in’ mind?!’ So I ended up moving in with Michael.

Michael Fassbender: Into the spare bedroom of my waterfront flat in Belfast.

LC: So every morning, we get up, he puts on the porridge and we start running the f***in’ scene. At one there’s a knock on the door and we’re handed the food, and the door shuts again. We go on till six or seven o’clock until Steve turns up, looks at our progress, gives us some notes, and then off we go again. Running this scene 15 or 20 times a day for five days.

MF: So when we arrived on set we just went straight into it [slaps his hand, clapper-board style]: Take one, 23 minutes, right through. We did four takes, and they used the fourth.

LC: The irony is that now, with MTV editing, you’re lucky to get a two-minute scene in total. Whereas here, we’ve got to hold people for the whole scene, and let them know that they haven’t seen anything like this before.

MF: We said it at the time: ‘If this doesn’t work, then we’re . . .

LC: . . . f***ed! Hunger, though, is more than just a formal experiment. It’s an interpretation of a real-life event during the Troubles in Northern Ireland, a period that is still to some, says Cunningham, “very much an open wound”. Typically, for research, the actors met friends of Sands, and people who were “involved with the struggle”.

“But I really don’t know how much we want to get into that,” Fassbender says sternly. He refused offers to meet the surviving Sands family (“I thought it would be a bit weird to get too close”) and is aware of a media campaign to paint the film as a controversial canonisation of Sands, a convicted IRA gunrunner.

MF: But it is controversial because it is our history. It is English and Irish history. And as soon as you put that on screen it becomes difficult.

LC: The first thing Steve said to me was: ‘We obviously are concerned about not making this guy out to be a hero!’

MF: It’s about human beings. It’s about the prison orderly who sees Sands as a dying man, and tries to give him some dignity. Or it’s the riot guard who’s just a boy [Fassbender starts to well up], but who has to work up such hatred inside of himself in order to do his job. It’s about what we’re doing to each other as human beings. It’s beyond politics.

On cue, and speaking of Hunger, the food arrives. Fassbender is having pasta, Cunningham lamb. They puncture the unexpected sobriety with discussion of Fassbender’s shocking weight loss for the rest of the movie – the production shut down and the actor flew to LA and lived on berries and nuts for ten weeks, dropping more than 50lb.

“The nutritionist said that I shouldn’t eat less than 900 calories a day,” he says. “But the weight wasn’t coming off, so for the last four weeks I went down to 600 a day” (a couple of cartons of blackberries and a sardine). He adds, though that on-screen emaciation can often be distracting for the public, and an obsession for the media. “It’s like, ‘You got down to 59 kilos? Oh really, we heard it was 56!’ It shouldn’t be about sensationalism. It should just be about maintaining the illusion.”

Fassbender caught the acting bug at 18 in Killarney when he staged a theatrical version of Reservoir Dogs in the local nightclub. After graduating from the Central School for Speech and Drama in London, he struggled, working in bars, popping up in commercials and getting a supporting part in Band of Brothers. “There’s a list, and if you’re not on that list, you never get a look-in,” he says.

Now that he’s on the list, and with a Joel Schumacher horror movie, Creek, and Andrea Arnold’s drama Fish Tank on the way, it’s strange to find himself finally working with Tarantino, and sharing his Reservoir Dogs secret. “I told him about it,” he says. “He thought it was great, but only after I told him that I didn’t make any money from it, and it was for charity.”

Cunningham, who’s Dublin-based, married with three children, says that he has no shame about doing glossy blockbusters such as The Mummy 3. “My kids are huge fans. We go on holidays, we bring the box sets. It’s the first time they’ve been even mildly impressed by what I do!”

The London-based Fassbender, meanwhile, who admits obliquely to being not quite single and not yet married, says that he was more than happy to be sold as a rippling baby-oiled sex object in 300. “Every time we were doing squats in those leather Speedos I used to say: ‘Well, that’s the pink pound covered anyway!’ ” he says, chuckling wildly, and sending Cunningham into paroxysms of laughter.

The two men try to steel themselves for a serious conclusion. Fassbender looks over at Cunningham and asks: “Have we forgotten to tell him anything?” Cunningham shrugs, smirks, then adds: “Other than the fact that we’re lovers, no.”

Hunger will be screened at The Times BFI London Film Festival on Oct 19 and 20. It is released on Oct 31 2008

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