BUTTERBEAN TRADES HIS BOXING GLOVES FOR A SHERIFF’S BADGE IN INVESTIGATION DISCOVERY’S FIRST DOCU-SERIES,  BIG LAW: DEPUTY BUTTERBEAN Silver Spring, MD—Former heavyweight boxer Eric Esch, more popularly known as Butterbean, barreled into the national ring in the ‘90s like a 400-pound wrecking ball clad in American flag shorts. Now, Butterbean is taking his hard-earned, tough…