In the third of Sky One's specials celebrating 20 years of "The Simpsons", Ricky Gervais speaks to a selection of the huge number of celebrities who have guest-starred on the show over the years.
| Creator | Matt Groening |
|---|---|
| Actor | Dan Castellaneta, Julie Kavner, Nancy Cartwright |
| Country | United States of America |
| Production | Gracie Films |