LEXINGTON, Va. -- Mark Rush could not name the last movie in the past 10 years that gave him a belly laugh -- or made him snort or chuckle or laugh out loud, at least for any extended period of time. "The last side-splitting movies I saw were 'Caddyshack' or 'Blazing Saddles,'" the politics and law professor at Washington and Lee College said. "That was way too long ago." Rush and I were talking over dinner at the Red Hen, a farm-to-table restaurant that made headlines earlier this year for its unfortunate decision to refuse service to White House spokeswoman...