These guest stars either recorded a role that was cut, or were replaced with another actor. * James Earl Jones, who later made three guest appearances on the show, was initially lined up to voice Sideshow Bob in "Krusty Gets Busted" before Kelsey Grammer was selected. * Catherine O'Hara originally recorded the role of Colette in "Flaming Moe's" but the writer's decided her voice didn't fit the character and she was redubbed with Jo Ann Harris. * Jim Carrey was planned to voice the singing railroad hobo in "Simpsons Tall Tales". However, he did not have time to record the part. Instead, Hank Azaria voiced the character. * Julie Andrews was planned to voice Shary Bobbins in "Simpsoncalifragilisticexpiala(Annoyed Grunt)cious" but the staff opted to use Maggie Roswell instead.