The Rick Mercer Report episode that includes his appearance at the Gravenhurst Winter Carnival airs this week. The episode will air on Tuesday at 8pm. Crews had the cameras rolling as Mercer raced snowmobiles, dogs and beds at the carnival. Organizers say this year’s events drew a 20 percent bigger crowd over last year. (PHOTO: Mercer at the carnival with Parry Sound-Muskoka MP Tony Clement)