Hearing All The Voices Nancy Cartwright Does For ‘The Simpsons’ Is IncredibleHearing All The Voices Nancy Cartwright Does For ‘The Simpsons’ Is IncredibleNancy Cartwright posted a video of her speed-running through all of her different voices in 40 seconds and it's mesmerizing. Source: Twitter Free Beer and Hot WingsFree Beer and Hot WingsKelly CheeseKelly Cheese