By John Matthews, founder of Gray Cat Enterprises Inc. “Merchandising, merchandising, where the real money from the movie is made. Spaceballs the T-shirt. Spaceballs the lunchbox. Spaceballs the coloring book. Spaceballs… the flamethrower! Kids love it. And my favorite, Spaceballs the Doll — me!” — Yogurt from the movie Spaceballs Merchandising is a critical aspect…