Oh, drama. Or should we say - UGH, drama. Anyone who watched "The Voice" this season could tell the tension between coachesChristina Aguilera and Adam Levine was palpable and not just for the cameras. Aguilera was easily the most outspoken judge on the panel and rarely sugar-coated her opinions, coming across as overly harsh at times. Levine opted to go in the exact opposite direction, playing the nice ...