Maggie Simpson either of Groening or Csupo's initial recordings (from the show's early episodes). Other than her sucking noise, Maggie has been known to make other noises, such as occasional squeals and babbling. In most instances, these vocalisations are provided by either Nancy Cartwright or Yeardley Smith. Although she had previously spoken in fantasies and dream sequences, Maggie's first word spoken in the normal continuity of the series occurred in "Lisa's First Word", when she was voiced by Elizabeth Taylor. Although it was only one word ("Daddy"), Taylor had to record the part numerous times before the producers were satisfied. James Earl
The Simpsons Spin-Off Showcase guest stars appear in the episode; Phil Hartman as Troy McClure, Tim Conway as himself and Gailard Sartain as Big Daddy. McClure is used as a host of the episode, something he had previously done in the episode "The Simpsons 138th Episode Spectacular". Conway appears as himself. Conway, a comic veteran, is known for his work on "The Carol Burnett Show", which has a similar format to "The Simpson Family Smile-Time Variety Hour". Due to Lisa being substituted for an older teenager (voiced by Pamela Hayden) in the third segment, Yeardley Smith has only one line in the entire episode.