Hillary and Bill Clinton took a break from the South Beach Diet on Wednesday to do lunch Buffalo-style: spaghetti Parmesan and chicken cacciatore at Chef's on Seneca Street. "I figure once a year, it's OK," said former president and quadruple by-pass survivor Bill Clinton, as he chomped down on a cannoli while simultaneously shaking hands with adoring fans. The Clintons were at Chef's with about 40 convention organizers and volunteers to wrap up their appearances in Buffalo for the state Democratic convention. "That was amazing!" gushed hostess Kim Ehnes, 19, of East Aurora, moments after the powerhouse political duo was...