Can you recommend some good books for a long flight?

I have a long trip coming up next week (21 hours total) and I need a good brain-candy book or two to take my mind off it. I feel like a thriller of some sort would be great. My last long trip I read “Pillars of the Earth,” which was great. But this time I really want something almost mindless. Any suggestions? Or, how would you kill time on a trip from the US west coast to Europe?