Who says life isn’t rough as a broadcaster? Grant Hill was enjoying a snack at halftime of Bulls-Bucks on NBATV last night when this jerk just barrels right into him. That’s a former NBA All-Star! And then the guy has the nerve to do one of those “sorry-not-sorry” things as he’s just walking away. Where’s your manners, America! At least for Hill and broadcast partner Ian Eagle, they didn’t have this taking place behind them…