I just bought
Every Day by David Levithan, which I haven't read yet but looks really interesting.
I also popped in a thrift store the same day and picked up four books for around six dollars (and two were hard covers, woo!)
Angels and Demons by Dan Brown (read and loved years ago, just wanted a nicer copy)
The Da Vinci Code by Dan Brown (same as above, though slightly less loved)
Marley and Me by John Grogan (haven't read, but I can't wait)
The Lost World by Michael Crichton (I loved Jurassic Park, so we'll see)