First color Looney Tunes cartoon.
Among the other personalities depicted are popular pinup film star Victor Mature (the cat momentarily transitions into a caricature of him), Gallic actor Charles Boyer (who would in turn inspire WB character Pepe Le Pew), comic actor Lou Costello and radio character actor Jerry Colonna.
The catchphrase "Well, something new has been added!" originally comes from Jerry Colonna, one of Bob Hope's radio sidekicks. and was previously said in Booby Traps (1944)