On Sunday, NBC's Andrea Mitchell took a couple of minutes to say goodbye to moderator David Gregory, who is leaving the show and NBC News. <br /> <br />Gregory will be replaced by NBC's Chuck Todd, who begins as moderator next Sunday. <br /> <br />Mitchell played clips of Gregory's career highlights at NBC and "Meet the Press." <br /> <br />"In 20 years with NBC News, David has done it all," she said. "Through all the years, David has been true to the traditions of this program and NBC News." <br /> <br />She concluded by saying goodbye to him as a coworker. <br /> <br />"As David leaves NBC News for his next adventure, I will miss him as a daily colleague, but I know he will always be a friend," Mitchell said.
