In which year, did this earliest guest star in 1999 for SpongeBob SquarePants stop providing the voice?
SpongeBob SquarePants (season 1) The first season of the American animated television sitcom "SpongeBob SquarePants", created by former marine biologist and animator Stephen Hillenburg, aired from May 1, 1999 to April 8, 2000, and consists of 20 episodes. The series chronicles the exploits and adventures of the title character and his various friends in the fictional underwater city of Bikini Bottom. The show features the voices of Tom Kenny, Bill Fagerbakke, Rodger Bumpass, Clancy Brown, Mr. Lawrence, Jill Talley, Carolyn Lawrence, Mary Jo Catlett, and Lori Alan. Among the first guest stars to appear on the show were Ernest Borgnine and Tim Conway voicing the superhero characters of Mermaid Man and Barnacle Boy, respectively.
All Singing, All Dancing "All Singing, All Dancing" is the eleventh episode of "The Simpsons"' ninth season. It originally aired on the Fox network in the United States on January 4, 1998. In the fourth clip show aired by "The Simpsons", Homer claims he hates singing, so Marge shows family videos of musical numbers from the previous seasons of the series. The original material was directed by Mark Ervin and written by Steve O'Donnell. It was executive produced by David Mirkin. It features guest appearances from George Harrison, Patrick Stewart, and Phil Hartman, although these are all clips and none of them recorded original material for the episode.