Airport fiction

I was in a second-hand bookshop once that had the books organised in interesting categories. I particularly remember the section signed "Airport Fiction." It contained all those books you see for sale somewhere between customs and the boarding gates. Looking along the shelf there were so many familiar titles and authors on the books I had read in the air, but nowhere else.

I read the Shopaholic series by Sophie Kinsella while off the ground, buying a book or two at each airport through Sydney, Honolulu, Los Angeles, Atlanta and Orlando.

The books kept me entertained when I couldn't concentrate on anything heavier and even the movies were too dramatic to follow.

What do you read on the plane (in-flight magazine excluded)?