Fadeaway, I enjoyed My Sister's Keeper too, but read another book by that author and did not like it as much. Are you familiar with her other stuff? If so, which ones would you recommend?
I am reading Darkly Dreaming Dexter by Jeff Lindsay right now and really enjoying it. I didn't think I would, and the promos for the tv show never interested me. But this is actually a really interesting mystery, and Dexter is a unique character.