Starting at 10 a.m. ET, The Colbert Report is noting its final day on the air by an all-day marathon that runs right up to Jon Stewart’s Daily Show at 11 p.m. ET. That’s 11 straight hours of selected episodes from The Colbert Report – episodes which are being presented as a surprise, without any information about which ones are shown, or when. But I’d bet that the opening offering will be Stephen Colbert’s first show from 2005. I’m not certain of that, but it has the ring of truthiness.