AllMovie

Miss Hoover (voice of Maggie Roswell), one of the teachers at Springfield Elementary School, contracts Lyme Disease and is forced to take a leave of absence, so Lisa (voice of Yeardley Smith) and her class have to make do with a substitute teacher, Mr. Bergstrom (voice of Sam Etic). Mr. Bergstrom is funny, enthusiastic about teaching, and offers Lisa much more encouragement in her intellectual abilities than Miss Hoover ever did, and Lisa soon finds herself developing a crush on him. On Mr. Bergstrom's recommendation, Lisa asks Homer (voice of Dan Castellaneta) to take her to the local historical museum, where they run into Bergstrom; Homer behaves like a boor, and Lisa is mortified and ashamed of her father. As Homer realizes he has to do something to win back his daughter's respect and affection, Lisa is crushed to find Miss Hoover back in class and Mr. Bergstrom moving to another town. Amidst all this, Bart (voice of Nancy Cartwright) wages a hard-fought political campaign to become class president over Martin Prince (voice of Russi Taylor). While credited to Sam Etic, the role of Mr. Bergstrom is widely believed to have been voiced by Dustin Hoffman. "Lisa's Substitute" was first aired on April 25, 1991.