'Cheers' Mailman John Ratzenberger Issues Plea to Save U.S. Post Office

John Ratzenberger is throwing his fictional mailman hat in the ring to save the U.S. Post Office, and maybe you didn't know this, but ... Cliff's got a plan to do it!!! Ratzenberger, who famously played know-it-all mailman Cliff Calvin on "Cheers,"…