On Sky1, this episode was erroneously entitled "The Last Temptation Of Krusty."
Krusty's "Me so solly (sorry)", "Me likey fly lice (fried rice)" and "Me frappa dickey rong time (flap dickey long time)" bits are an Asian stereotype that combines perceived Chinese and Japanese pronunciation of "L" and "R" sounds.
When Lisa takes her shoe off, she has three toes on her foot instead of four.
When Lisa is wearing her church shoes, she is not wearing the store socks she is given. She may have refused them given how dirty they were.
After Krusty's audience is inspired to burn its money, Ms. Hoover's nose repeatedly turns black.
While Krusty is endorsing the Canyonero at Moe's Tavern, the white and orange on his cigarette switch position with each other a few times.
When Bart and Krusty are in the car at the end, they run into a dead end and the '20th Century Fox' logo comes on. However, it disappears and they are moving again.
Krusty's return to the underground comedy scene may be considered an homage to George Carlin, Lenny Bruce and Bill Hicks, known for their harsh, cynical comedy material in which they frequently criticized corporate America. Numerous parallels between the two can be drawn, such as Krusty adopting an all-black wardrobe (similar to Hicks and Carlin), and his more cynical, truth-driven material.