the significance of their role in the film. For example, Marlon Brando received top billing in The Godfather (although he had less on-screen time than Al Pacino's character; Pacino was displeased that he was only nominated for the Best Supporting Actor Oscar while Brando received the Oscar nod for Best Actor in a Leading Role), Apocalypse Now (see above), and Superman (also see above). Maximilian Schell was billed fifth in Judgment at Nuremberg after Spencer Tracy, Burt Lancaster, Richard Widmark, and Marlene Dietrich, yet Schell went on to win the Oscar for Best Actor in a Leading Role. In recent decades, however, the practice of giving top billing to a star actor has largely been discontinued especially if they only play a bit part; some major actors may have a cameo where they are only noted within the other cast during the end credits. If an unfamiliar actor has the lead role, they may be listed last in the list of principal supporting actors, their name prefixed with "and introducing" (as Peter O'Toole was in Lawrence of Arabia) However "and introducing" is now mostly used in feature films by a young actor (usually a child) who appears for the first time in a motion picture. Sometimes, they may not receive special billing even if their role is crucial. For example, the then-unknown William Warfield, who played Joe and sang "Ol' Man River" in the 1951 film version of Show Boat, received tenth billing as if he were merely a bit player, while Paul Robeson, an established star who played the same role in the 1936 film version of the musical, received fourth billing in the 1936 film. If more than one name appears at the same time or of a similar size, then those actors are said to have "equal billing", with their importance decreasing from left to right. However, an instance of "equal importance" is The Towering Inferno (1974) starring Steve McQueen and Paul Newman. The two names appear simultaneously with Newman's on the right side of the screen and raised slightly higher than McQueen's, to indicate the comparable status of both actors' characters (this also features on the advertising poster). A similar situation occurred in 2002 with Chicago, where Renee Zellweger and Catherine Zeta-Jones received "stacked billing" on the film's poster, where a person reading from left to right would read Zeta-Jones' name first and a person reading