Ugh, I work with a guy that's almost the opposite of that, but it's just as obnoxious. He'll agree with you, but constantly tries to make it sound like he knew it all along. "Hey [coworker], could you fill up the printer with paper?" "Oh, yeah, that paper is getting really low."........me thinking: "Yeah, Jackass, that's why I asked you to fill it." This happens all the time in a manner that clearly attempts to convey that he didn't need to be corrected or directed, because he *always* had that information. This is just the tip of the iceberg regarding this guy.....