THE CHARACTER Lady Gaga (from ''Lisa Goes Gaga,'' 2012)
When Lisa falls into a funk, the pop queen and her egg-bearing mantourage breeze into town to cheer up the middle Simpson. It goes about as smoothly as a meat dress at a PETA benefit, with Lisa reducing Gaga to tiny diamond tears before realizing that the megastar who tore through 18 animated outfits in 23 or so minutes might be on to something with her spiel about self-esteem. Say it with us now: You're on the right track, Lisa, you were born this way! Lanford Beard
Image Credit: Fox
As the animated series begins its 24th season, we look back at Springfield's most memorable visitors' voices, from Lady Gaga to Lurlene Lumpkin (Beverly D'Angelo), from Stradivarius Cain (Bryan Cranston) to Jessica Lovejoy (Meryl Streep)