<P> The lighting system is programmed to darken the set as the contestant progresses further into the game . There are also spotlights situated at the bottom of the set area that zoom down on the contestant when they answer a major question; to increase the visibility of the light beams emitted by such spotlights, oil is vaporised, creating a haze effect . Media scholar Dr. Robert Thompson, a professor at Syracuse University, stated that the show's lighting system made the contestant feel as though they were outside a prison while an escape was in progress . </P> <P> When the U.S. Millionaire introduced its shuffle format, the Hot Seats and corresponding monitors were replaced with a single podium and as a result, the contestant and host stand throughout the game and are also able to walk around the stage . According to Vieira, the Hot Seat was removed because it was decided that the seat, which was originally intended to make the contestant feel nervous, actually ended up having contestants feel so comfortable in it that it did not service the production team any longer . Also, two video screens were installed--one that displays the current question in play, and another that displays the contestant's cumulative total and progress during the game . In September 2012, the redesigned set was improved with a modernised look and feel, in order to take into account the show's transition to high - definition broadcasting, which had just come about the previous year . The two video screens were replaced with two larger ones, having twice as many projectors as the previous screens; the previous contestant podium was replaced with a new one; and light - emitting diode (LED) technology was integrated into the lighting system to give the lights more vivid colours and the set and gameplay experience a more intimate feel . </P> <P> Millionaire has made catchphrases out of several lines used on the show . The most well - known of these catchphrases is the host's question "Is that your final answer?", asked whenever a contestant's answer needs to be verified . The question is asked because the rules require that the contestants must clearly indicate their choices before they are made official, the nature of the game allowing them to ponder the options before committing to an answer . Regularly on tier - three questions, a dramatic pause occurs between the contestant's statement of their answer and the host's acknowledgement of whether or not it is correct . </P> <P> Many parodies of Millionaire have capitalised on the "final answer" catchphrase . In the United States, the phrase was popularised by Philbin during his tenure as the host of that country's version, to the extent that TV Land listed it in its special 100 Greatest TV Quotes and Catchphrases, which aired in 2006 . </P>

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