I've read all of Dan Brown's books (i.e. DaVinci Code) and they're all great, fast-paced stories, if a bit formulaic (If you've read more than 2 of his books, you can guess the endings.).
I'm also a HUGE proponent of Harry Potter (the books, not the movies). JK Rowling is, in my opinion, one one of the most gifted natural storytellers in the history of the English language.