National Treasure: Book of Secrets is very silly, but that's no bad thing. The clip you can seehere should give you a good idea of what to expect.
Because they're in London, Cage and his team have to go to Buckingham Palace and see some Royal Guards in uniform, so that Americans can tell that it's not just Connecticut or something. The scene is all action, but we just couldn't take our eyes off Cage's hair. Who thought that was a style to convey heroism and can-do spirit? It looks like it's trying to retreat off the back of his head in embarrassment. Tom Hanks in The Da Vinci Code, you have a challenger for worst hair in the history of movies.