Though rarely shown on TV these days ... 9/11 footage is replayed more than once in The Unofficial Story" [on the CBC News program the fifth estate]. The documentary follows up on some fairly startling public-opinion polls of late. To wit: More than half of all Americans believe the Bush administration had advance knowledge of 9/11, and did nothing to stop it; slightly more than one-third of the Canadian population believes likewise. "The number of people who believe the U.S. government was involved in the attacks appears to be growing," says fifth estate veteran Bob McKeown, who helms the report. "Most of them believe there are still questions that have gone unanswered." Among the group's more prominent proponents is Richard Gage, a well-regarded architect interviewed by McKeown in the program. Gage is fervent in his belief that the destruction was intentional, and was not accomplished with airplanes, but with explosives. Also speaking out for the Truthers movement is academic and Nobel Peace Prize nominee David Ray Griffin - who questions the lack of NORAD response after the first plane struck the tower - and Canadian professor Kee Dewdney, who insists the fabled on-board struggle between hijackers and passengers on United Airlines Flight 93 could only be a hoax. "The really interesting thing to me is that you cannot get these people to speculate," observes McKeown. "They will say, 'That is not my job.'"