When Bugs tosses the reels of his best scenes to the projectionist, he calls out "Okay, Smokey. Roll 'em." This is most likely a reference to Henry Garner, the cameraman and projectionist for the Leon Schlesinger studio, who was nicknamed Smokey.
When the stag film appears, a shocked Bugs stops everything and gets a new film. In 1944, a stag film was the term referred to a pornographic film.
Cafe Trocadero was an upscale nightclub that opened on the Sunset Strip in 1934 and immediately became the place where Hollywood stars went to be seen. Photographs of the stars out on the town at "the Troc" one night might appear in The Hollywood Reporter the next day, as both were owned by William R. Wilkerson. It closed in 1947.
The Hollywood newspaper seen at the beginning appears to show election results, a wartime attack on the Japanese navy, news about shortwave radio stations, a missing navy chaplain and a wishful headline about Hitler committing suicide, which actually happened the following year.
Another cartoon where celebrity inside jokes and impersonations, meant for an adult audience, are an integral part of the action.