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"Bob Barnes" - the character portrayed by George Clooney in the film "Syriana", is based on the real life exploits of career CIA operative Bob Baer. Baer spent 21 years as a CIA manhunter. Mr. Baer is the lead investigator on the History Channnel's popular TV series "Hunting Hitler". Season 3 is due to air in late 2017. Source: These details are stated by Baer in the opening team overview/background of both Season 1 and Season 2 of the program.
George Clooney suffered a spinal injury during a stunt. Due to the weight he gained for his role, the injury left him bedridden for a month and caused severe migraines, which prevented him from doing publicity for Ocean's Twelve (2004). The injury was eventually corrected with surgery. Clooney has since called his weight gain "pretty stupid".
Syriana is a term used by Washington think-tanks to describe a hypothetical re-shaping of the Middle East.
Harrison Ford was the original choice to play Bob Barnes, but turned it down. He later told Empire magazine that is one of the few movie career decisions that he has regretted.
George Clooney gained 35 pounds on a pasta-heavy diet to play CIA operative Robert Barnes. The actor also shaved his hairline for the right look.
In the days leading up to the Oscar nominations, the Academy announced that the film's screenplay was considered original, not adapted. Since it had been strongly advertised as adapted, many believed the film would not be nominated. It was nominated for Best Original Screenplay, but lost to Crash (2004).