Carl Karcher, who parlayed a single hot dog pushcart into a chain of more than 1,000 fast-food restaurants bearing his name, died Friday. He was 90. The affable, burly entrepreneur, known to millions as the jovial television pitchman for the Carl's Jr. chain, died of complications from Parkinson's-related pneumonia at St. Jude Medical Center in Fullerton, according to Beth Mansfield, a spokeswoman for parent company CKE Restaurants. A stalwart Orange County Republican, Karcher worked tirelessly for the party and its candidates, still finding time for active and enthusiastic involvement in local causes, including United Way of Orange County, Orangewood Children's...