In the movie, Priscilla Queen of the Desert; in the main menu screen. Underline scene selection or special features, then hit the down arrow (works too by underlining the play and language, just hit up instead). Notice the star symbol above the menu list. Hit enter to highlight the star. A history time-line will pop up, on the history of drag entertainment over the years.
Go in the "Special Features" and select the documentary "Ladies Please". Press play. The documentary starts with a text on a blue background. As soon as this text pops up, hit the "forward / skip scene" button of your remote: >|.
You will see the complete take of Guy Pearce, dressed in silver on top of the bus, singing the famous soprano aria from "La Traviata".
All easter eggs were generously submitted by SirDonk