MICHAEL Moore isn’t the only filmmaker with a political agenda. Right-wing former Pennsylvania Sen. Rick Santorum was overheard plotting plans to make a movie with “Passion of the Christ” producer Steve McEveety. At the Pierre Hotel recently, the pair was discussing a film “to be released in October of 2008 in order to in fluence the November elec tion.” From what our eaves dropper could tell, it’s about “Three Iranian brothers . . . One comes to the U.S. as a ter rorist.” Santorum and Mc Eveety didn’t return calls for comment.