The Simpsons Season 25, Episode 12, "Diggs," features Daniel Radcliffe as an eccentric transfer student who befriending Bart before revealing serious mental health struggles. While featuring a strong vocal performance and consistent humor, the episode received mixed reviews for its somber tone and lack of narrative execution. For a detailed breakdown of this episode's reception, visit No Homers . "The Simpsons" Diggs (TV Episode 2014) - IMDb