"Angels and Demons" and "The DaVinci Code" by Dan Brown are the best books I have ever read. I absolutely loved them and would probably read anything that Dan Brown wrote.
If you want something very dark and disturbing, read "Less than Zero" by Bret Easton Ellis. It was hard to put down, but DEFINATELY a troubled story.
"Tuesdays with Morrie" is one of the most inspirational books I have read recently. It is by Mitch Albom who also wrote "The 5 People You Meet in Heaven". It makes you want to cherish every moment.
Oh, and I also have to throw in my recommendation for the Harry Potter books. If anyone has read the HP thread, then you know why. Those books are my escape.