The slogan of Shapes, as seen on the wall of the workout station room, is "I am woman, hear me sweat." The slogan is a pun on the lyric "I am woman, hear me roar" from the song "I Am Woman" by Helen Reddy.
There is a real fitness chain called Shapes in Florida.
During the montage of magazine covers highlighting Marge's success, she is seen on the front page of Rupert Murdoch's The Wall Street Journal, a reference to News Corporation's purchase of the paper earlier in the year. It was also referenced in the chalkboard gag for "The Homer of Seville".
The comics displayed behind the writers at the signing are Lost Girls, Maus, and Ghost World, respectively written by guest stars Alan Moore, Art Spiegelman, and Dan Clowes. Art Spiegelman's mask is based upon the mask he has drawn himself wearing as an illustrator in Maus.
Alan Moore's outburst at Milhouse's request that he sign the comic Watchmen Babies in V for Vacation (a parody of Watchmen and V for Vendetta), is a reference to Moore's opposition to adaptations of his works by major film studios, particularly his refusal to support the recent film adaptation of V for Vendetta.
Two popular European comic books, Asterix and Tintin, are referenced. The book Tintin in Paris is a parody of the books The Black Island and Destination Moon. Also shown are several actual Tintin books, such as The Shooting Star and Tintin in Tibet.
Coolsville Comics & Toys is a parody of the real store Meltdown Comics & Collectibles on Melrose in Hollywood, California. The writers of the show go there for their comics. Coolsville looks almost like Meltdown except for slight differences.
When Comic Book Guy tries to lure his customers back with ninja weapons, the writers are making an indirect joke at the real world Toy Mandala, a comic store competitor of Meltdown Comics & Collectibles. Toy Mandala does actually sell ninja weapons in real life and is a comic store. They do not, however, sell weapons to children.
Kearney says to Marge that she skinnier than Girthquake and Flabberella.