Six Flags is the largest regional theme park operator in the world with 19 theme parks in North America, and plans to open more overseas, including China. With the stock up almost 15 percent in the past year, Cramer spoke with Six Flags CEO John Duffey, who confirmed that he thinks the company is headed in the right direction. "The strategy that we have had in place has been a strategy that we have had in place really for the last 6 years is working.