 On February 22, 2000, his first music CD Two Lips was published. It was followed on April 23, 2002 by his first comedy CD, I Am Not Homer, in which he and his wife perform several comedy skits. The majority of the sketches had been written and performed before the CD was recorded, and Castellaneta thought that it would be a good idea to preserve them "since [he and Lacusta] don 't perform them much anymore." Some came from their sketch series on a local radio station in Chicago and had to be lengthened from the "two-minute bits" that they were originally, while several others were stage sketches performed in a comedy club in Santa Monica. Additionally, "Citizen Kane", a sketch in which two people discuss the film Citizen Kane with different meanings, was something the pair had performed at an art gallery. Castellaneta noted that "we already knew that these skits were funny, [but] some of them we polished and tightened." The skits were principally written by improvising from a basic point, transcribing the results and then editing them to the finished scene. Castellaneta chose the title I Am Not Homer as a parody of Leonard Nimoy's famous first autobiography I Am Not Spock, as well as to show that most of the comedy featured "is not the typical Homer comedy."
