TORONTO -- As a sign of business away from the festival's sales office, Toronto-raised director Ivan Reitman will be in the city Tuesday to ink a deal to finance and executive produce a Canadian movie about homegrown trailer trash. Reitman will executive produce the comedy that stars Ricky, Bubbles and Julian, the main characters of "Trailer Park Boys," a 4-year-old cult TV hit in Canada that now airs on BBC America. The Nova Scotia project will be directed by the TV show's creator, director and writer Mike Clattenburg. But significantly, the Canadian government, the biggest investor in Canadian film, is using Reitman's boxoffice pull as the centerpiece of its strategy to boost the domestic boxoffice here to 5% by 2006. "The Trailer Park Boys" features three dope-smoking ex-convicts living among friends and family in the fictional Sunnyvale Trailer Park.