NBC's Brian Williams taking on new competition

NEW YORK (AP) — Wearing shades as he walked back to work following a pizza lunch recently, Brian Williams ducked into Rockefeller Center and passed a tour guide who noted the celebrity sighting to his group: "Ladies and gentlemen, there's Tom Brokaw."

The television business can be humbling, even nearly 10 years after Williams succeeded Brokaw as NBC "Nightly News" anchor. ...