Watching Nic Cage whip off his glasses with alarm about 4,000 times

I'm still addled with fatigue from being an extra this past weekend for National Treasure: Book of Secrets, the sequel to the 2004 Nicolas Cage action extravaganza. We shot in the reading room of the Library of Congress (pictured) for about 20 hours -- from Saturday evening to Sunday morning, and then Sunday afternoon to Monday morning. A good friend of mine is writing a newspaper story on the experience, so I will surely direct you to it upon publication April 29. All the scandalous on-set gossip will be included there. (But one thought for now: Cage's hair is an engineering marvel.)