Dial "N" for Nerder/References

References/Trivia

Cultural References

The title is a take-off of Alfred Hitchcock's film Dial M for Murder. This was also spoofed in Dial Z for Zombies.
The TV show Marge hires is called "Sneakers", a parody of the TV show "Cheaters".
The closing sequence duplicates the opening to the NBC Mystery Movie, with Nelson Muntz as Columbo, Dr. Hibbert as Quincy, Rich Texan as McCloud and Mr. Burns and Smithers as McMillan & Wife.
The "Taj-Mah-All-You-Can-Eat" restaurant takes its name from the Taj Mahal.
The way Nelson investigates the murder of Martin, is similar to the way Columbo would.
The first song at Martin's funeral is Gotta Fly Now (the theme from Rocky), the second one (during the slideshow) is "I Will Remember You" by Sarah McLachlan.
The scene where Bart and Lisa meet at the Kwik-E-Mart bears resemblance to a famous scene from Double Indemnity.
The part where Lisa urges Bart to keep quiet about their involvement to Martin's death resembles Lady Macbeth convincing Macbeth to calm down and lie about Duncan's murder. Lisa also states that she has a dark side, like Lady Macbeth.
The restaurant which Homer goes to, "Pudding on the Ritz", is a parody of the song "Puttin' on the Ritz" by Fred Astaire.