Harry Potter and the Deathly Hallows:
Book acquired: 1:15AM.
Book completed: 8:03AM.
(And I did it on a single Red Bull and No-Doz.)
Now comes the greater challenge: seeing if I can sleep.
I got the book around 1am, but I wasn't able to read it until later in the day. I read it at work, while still trying to take care of the dogs (it was a blessedly slow day), and managed to get a good chunk of it done while I was there. I just finished.
She had me near tears by the third chapter. I had to put it down and walk away from it at work. I'm not sure if I'll be able to sleep that well--I think my heart is still racing.
I'll post some thoughts over on my page and put up a SPOILER heading.