You should declare it here but you can wait to declare it until just before you post your entry. You have until May 3.
I found The Road to be extremely depressing. One of those movies that is worth watching but you never really want to see it again.
It was that cellar scene that did it for me.
NB - I have been reliably informed by someone with impeccable taste in novels that the book version is one of the best he's ever read - apparently the film misses a lot of the father-son relationship stuff which is more about what the book focuses on!