Elements in the opening diner scene matching Norman Rockwell's famous September 20, 1958 Saturday Evening Post cover illustration "Runaway" include the red hobo pack, the white-clad counter man, the white vertically ribbed wall, the Specials chalk board, the chrome bar stools with green cushions, the coffee maker on right, the pie case on left, and the wall mounted radio. Appropriately added for the film is a Kellogg's display. In the Rockwell painting, Seinfeld's place is taken by a police officer who suspiciously eyes the little runaway.
Seinfeld asserted in an interview with Jimmy Fallon that he did not seek permission from Kellogg for using their product names and characters but he would enjoy being sued.
Jerry Seinfeld said, "Chris Rock was going to be the emcee of the Bowl & Spoon Awards - and we shot that right after the Will Smith slap. I was going to have somebody come up on the stage and have Chris punch 'em out as they got there." However, according to Seinfeld, Rock "was a little shook from that event," and the role instead went to Cedric The Entertainer.
Bob Cabana (Jerry Seinfeld) is given bad milk to smell by milkman Mike Diamond (Christian Slater). He asks "What's the expiration...?" and as he passes out Diamond says, "July Third." This is based on a joke Seinfeld did in his standup act, in which the cow that gives the milk tells the dairy its expiration date, and Seinfeld had the cow saying that exact date: "July Third."
Credited only as Ad Man 1 & 2, Jon Hamm and John Slattery are not credited by their Mad Men (2007) character names of Don Draper and Roger Sterling. However, Hamm refers to Slattery as "Roger."