Being overweight is no laughing matter, but Sir Charles Barkley and his cohorts over at Weight Watchers clearly think some of us need to lighten up -- literally and figuratively. The former NBA star and perpetual jokester was photographed wearing a halter dress and heels for a new ad campaign aimed at men. In the "Lose Like A Man" TV spot, slated to air on April 8, Barkley pledges to do anything necessary to get the attention of men and to get them on board with losing weight, Weight Watchers...