It's very hard to spot your favorite cartoon voiceover artist on the street because you have no idea what the actor looks like. This 13-year-old boy got the best surprise when Nancy Cartwright, the voice of the 10-year-old Bart from The Simpsons, came over to buy candy from him. When she started talking like Bart Simpson, he first thought it was an impression, but he finally figured it out and his face is priceless.