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‘The Simpsons' Milhouse Star Pamela Hayden on Why She's Leaving After Sunday's Episode: ‘It Was a Tough Decision, But the Right One'
The actress, who has voiced Bart's best friend on "The Simpsons" for 35 years ... on "Hey Arnold," "Pinky and the Brain," "The New Batman Adventures" and "Recess." "It's a once-in-a-lifetime ...