NPR's Weldon asks, "Who's the Longest-Running Fictional Character Ever?"

See "Question: Who's the Longest-Running Fictional Character Ever?" by Glen Weldon, National Public Radio's Monkey See blog (May 20 2009) for his answer - it's a comic book hero. I don't think I quite agree, but I'm not sure why. There's 51 comments so other people may feel the same.