Time of the sign: Hollywood landmark hits 100

The landmark word has loomed over Tinseltown since before movies started talking, becoming a symbol of the entire film industry.

For the first time in decades, the Hollywood sign -- at least a little bit of it -- was illuminated on Friday to celebrate its 100th birthday.

The nine-letter sign is officially a centenarian but, as with many an aging grande dame in Hollywood, looks as fresh as ever.

Like the actors and actresses it looks down on, the sign has been in its fair share of films.