THE MEN WHO STARE AT GOATS (15).

Comedy/Drama. Ewan McGregor, George Clooney, Jeff Bridges, Kevin Spacey, Stephen Lang, Robert Patrick. Director: Grant Heslov.

Truth is certainly stranger than fiction in Grant Heslov’s black comedy, inspired by Jon Ronson’s non-fiction bestseller of the same name.

Prefaced by a disclaimer “More of this is true than you would believe”, The Men Who Stare At Goats constructs a deranged tale of US servicemen who are trained to become Jedi warriors, capable of killing the enemy with mind-power alone.

The soldiers harness this extra-sensory perception and telepathy by staring for hours at goats, hanging bags of sand on parts of their anatomy that shouldn’t see the light of day in public, and telling themselves they can pass through solid objects. Of course it’s all hogwash, but that doesn’t stop General Hopgood (Lang) rising from his desk in the amusing opening sequence, announcing loudly, “I'm going into the next office”, then running full pelt at a solid wall. “Damn it,” he groans after the laws of physics deal him a rude awakening and a trip to the infirmary.

Heslov’s film comes close to knocking us out, too.

Reporter Bob Wilton (McGregor) is embedded in Iraq during the early years of the invasion, scrabbling around for a story.

By chance, he encounters oddball Lyn Cassady (Clooney), who makes outlandish claims about being part of the so-called New Earth Army – an experimental US military unit dedicated to the art of mental warfare.

Lyn is on a mission to track down the New Earth Army’s one-time commander Bill Django (Bridges), who has disappeared without trace.

So Bob tags along with his mentally-unstable new acquaintance, learning more about the covert program through colourful reminiscences, such as the fierce rivalry with fellow psychic Larry Hooper (Spacey), who was always fiercely jealous of Lyn’s talents.

The Men Who Stare At Goats is a scatter-brained road movie in the company of another hilarious misfit from Clooney’s ever-expanding repertoire. McGregor plays the straight man throughout as our eyes and ears to the escalating madness, culminating in a memorable LSD trip in the desert.

Wherever truth ends and fiction begins, Heslov's film is a fast-paced jaunt that doesn’t overstay its welcome.