Favorite recurring segments on The Colbert Report?10 of 32
For the Formidable Opponent, Colbert debates a topic against the only person he deems truly worthy of his opposition: himself. The segment gives the appearance that there are two Stephen Colberts, each facing the other, wearing different colored ties (usually a blue tie for the liberal Colbert and red for the conservative) and standing against different backdrops, an illusion attained through use of a green screen and chroma-key technology to change the color of Colbert's tie. One of the Colberts will generally take a more liberal position, while the other will take a more characteristic ultra-conservative view. The conservative Colbert will almost always win, generally posing an extremely unlikely hypothetical situation (either concerning special circumstances or hypothetical fallout), and using that for his justifications.
To date, the only time the 'liberal' Colbert has won was on the episode airing on November 4, 2009. In this episode, the 'liberal' Colbert called on Al Gore to help him argue (who was there in person.) The ultra-conservative Colbert then called his own version of Al Gore (also played by the real Al Gore.) However, unlike the two debating Stephens, "both" Al Gores were of the same opinion, and convinced the conservative Colbert that they were right.