The Time Traveller's Wife by Audrey Niffenger

"The Time Traveller's Wife" is a love story with a difference. To quote the blurb on the back of the book:

"When Henry meets Clare, he is twenty-eight and she is twenty. He is a hip librarian; she is a beautiful art student. Henry has never met Clare before; Clare has known Henry since she was six..."

Henry suffers from Chrono-displacement disorder. Without warning, he regularly finds himself forced backwards and forwards in time. This is almost an incidental part of the story to be honest, an ailment the character suffers rather than the focus of the plot. Instead it deals with the people and how they are affected by it; Clare, who knows the man she is going to marry since she was six, but has to wait to actually meet him. Henry (who arrives in the past or future naked) living in mortal dread of arriving in a blizzard and dying of exposure, or being trapped within the ironwork cage within the library he works in... It's a story about love, and loss, and it'll have you blubbering by the end. Highly recommended.