GOODYEAR, Ariz. (NBC, KYMA/KECY) - There are a lot of unique things in Arizona, but nothing quite like what sits beside the 303, and though you've likely seen it, you may not know the story behind it. Along the 303 sits something big. So big, a 20-foot picture of a giant baby is hard to miss. Kathleen Duncan, who is seen in the mural holding a frying pan, is the co-owner of Duncan Family Farms, which is deeply rooted in the West Valley. "I marri…