One of the best books you will ever read. Also, is a movie coming out August 14, 2009 with Rachel McAdams and Eric Bana. The story is by Audrey Niffenegger and follows Henry as he time travels uncontrollably due to a genetic disorder called Chrono Displacement. He leaves everything but his body behind. He visits big events in his life, most importantly, he visits the love of his life Clare, through all years of her life. A great read.
From The Time Traveler's Wife:
Clare: It's hard being left behind. I wait for Henry, not knowing where he is, wondering if he's okay. It's hard to be the one who stays.
I keep myself busy. Time goes faster that way.
I hate to be where she is not, when she is not. And yet, I am always going, and she cannot follow.
Henry: I hate to be where she is not, when she is not. And yet, I am always going, and she cannot follow.