Dunkilderry's location is not clearly defined. Although the episode is set in the Republic of Ireland, the policemen's uniforms and vehicles at the raid appear more Northern Irish (British, PSNI). The vehicle doors are clearly marked with "POLICE", as in Northern Ireland and in the rest of the English-speaking world, but in the Republic of Ireland, the Police are generally and officially called "An Garda Síochána" (Irish Gaelic for: "Guardians of the Peace of Ireland"), and policemen are referred to as a "Garda" (plural: "Gardaí"), and their cars are also marked with the words "GARDA". Still, only one scene later, in the court, Chief Wiggum is seen accidentally knocking down the Irish flag, but one of the policemen who participated in the raid earlier (and therefore is Northern Irish), is guarding the Irish court.
Additionally, the Simpsons visit the Giant's Causeway, which is located in Northern Ireland (part of the United Kingdom). This therefore marks the Simpsons' second visit to the UK.
This is the first (and so far, only) episode of The Simpsons to premiere overseas first before premiering in America.
The dialogue for the German Krusty the Clown Show has a veiled Nazi reference within: Krusty's "Heil Heil" line in German was a reference to the mandatory greeting in Nazi Germany, "Heil Hitler" ("Heil" literally means "hail", as in greetings to). It was muted in the German version, as it is illegal in Germany to mention Nazism and Hitler in media without historical context.
Also, Mel's lament in German, "Krusty spritzen der Gaswasser" is grammatically incorrect. The noun Gaswasser (The German normally say "mineralwasser" and it means "seltzer water" or "club soda") is a neutral noun which takes the article "das." Also, the verb form is supposed to be in third-person singular, and the one depicted is an infinitive. A closer, more grammatically correct rendition of the sentence would be "Krusty spritzt das Mineralwasser."
The episode takes its title from a traditional Catholic benediction: "In the name of the Father, the Son and the Holy Spirit." or, a bit more likely, the Irish film "In The Name Of The Father" (1993).
Marge, Bart and Lisa parody the classic video game "Q-Bert" as they chase up and down the Giant's Causeway.
Kathy Ireland is shown during a short sequence. As revealed in the subtitles in the shot, the producers had invited her to appear and voice the cameo, but she declined.
Grampa mentions about feeling "as lonely as Estes Kefauver at a meeting of Murder, Incorporated." When the Simpsons look at him blankly, he retorts, "That actually makes sense! Look it up!" Senator Estes Kefauver headed highly-publicized hearings into organized crime in the 1950s. The hearings were a serious blow to the Mob in America, though they are more remembered these days for a side hearing on juvenile deliquency that became a referendum on comic books and the direct cause for the creation of the Comics Code Authority.
Mac's Fifth Avenue is a parody of Saks Fifth Avenue.
Sham-Rock Cafe is a parody of Hard-Rock Cafe.
Hewlett Fitzpackard is a parody of Hewlett-Packard.
Mick-rosoft is a parody of Microsoft.
Cisc O'systems is a parody of Cisco Systems.
The busker guitarist is a reference to the Irish film/stage musical Once in which an Irish guitarist falls in love with a married Czech musician and at a certain point in the film also buys her a piano as a gift.
The judge in Homer and Grandpa's trial looks similar to Mr. Potato Head.
This is the second time the Simpsons had a RHD car. Their registration plate was 93-G-5127, meaning their car was sold in County Galway.