“It’s bizarre,” remarked an admiring Jon Stewart, whose own program, “The Daily Show,” immediately precedes “The Colbert Report” on Comedy Central and is where the Colbert character got his start. “Here is this fictional character who is now suddenly interacting in the real world. It’s so far up its own rear end,” he said, or words to that effect, “that you don’t know what to do except get high and sit in a room with a black light and a poster.”