Seriously. They actually do. This title is not a metaphor.
Like The Informant!, though less subtle, the film is adapted from a book by Jon Ronson, which is supposedly a collection of mostly true stories, and instead of saying "Based on a True Story" the opening credit leads with "More of this is true than you would believe." And they are probably right, but it is a fun romp for all of that.
Ewan MacGregor acts as the narrator and guide on this strange journey. He is a troubled reporter in Ann Arbor Michigan who decides to prove himself by following up on a story of ridiculousness of enormous proportions. His initial source claims to be part of an elite unit that was trained to use various psychic powers against the enemy. He travels to Kuwait, waiting for a chance to cross the border into Iraq to find more trainees. As luck would have it, he finds Lyn Cassady (George Clooney) in the hotel lobby and the story only gets weirder.
The movie is full of Family Guy-esque flashbacks (some almost non sequitur) featuring Jeff Bridges as the progenitor of the movement (in tripping Lebowski style), Kevin Spacey as the unamused and mediocre physic, now private contractor and Stephen Lang as a goofy, grinning BG Hopgood.
Clooney's character seems to span all the slices of time we are privy to, and as such he vacillates between looking like Dennis Farina, Tom Selleck and James Taylor circa 1971. He brings back a bit of the goofy seen in O, Brother but seems to have aged into this role a bit more thoughtfully. There is a sincerity underlying the crazy. We are sucked into believing him, like the reporter, even though what he describes is utterly nuts. It is a fun ride, like letting go on a roller coaster.
In the end, the film isn't about much. The only truthful moment is when Cassady and an Iraqi national assure one another that not everyone from their country is not a terrorist, or an idiot. If there is anything to take away from it, it is that it ok to laugh at the inanity of war sometimes.