Once Upon a Time in Springfield/References

Cultural references

 * When Penelope is in Paris, the French graphic novel characters from "The Adventures of Tintin" can be seen watching her perform.
 * The title of this episode is a parody of.

Trivia

 * This episode aired during the closing celebrations of the Simpsons 20th Anniversary with The Simpsons 20th Anniversary Special in 3-D on Ice.
 * The closing caption originally read "The Best is Yet to Come," but was changed when it first aired to "Now stay tuned for three Seth MacFarlane shows," and again in the rerun to "Think of all the things you could be doing instead of wasting your time with this show."

Continuity

 * The last time someone was dressed up as a Star Wars character and said "I'm a Star Wars" was in Bart Has Two Mommies.
 * from "Mom and Pop Art" is seen in Paris.

Goofs

 * When Lenny says "Sir, I'm afraid it's too late", the words don't match the movements of his mouth.