At the moment I'm reading Marooned in Realtime by Vernor Vinge. This is one very cool book. If you love SF, you'll love this one.
"Vernor Vinge picks up on the milieu he created in an earlier book and expands upon the use of 'bobble' technology. The bobbles are stasis bubbles that can be set for durations ranging from hours to centuries. Since nothing inside them experiences the flow of time, they can be used as a kind of one-way time travel ticket to the future. Simply set the parameters as desired, pop up a bobble around you, and see what the world's like in two centuries.
This is what a group of men and women are doing on a deserted future Earth, slowly making their way up the timestream to see what lies ahead, and hoping to come back into synch with the rest of scattered humanity."