This is it! If you've ever been one that enjoyed reading the personal writings of your heroes, this is the one that will make you laugh, cry, and otherwise drop your jaw/raise your eybrows/rub your chin and brow academically/etc. Most touching, is her final letter to Leonard; I cried like a baby, after closing the book post-reading this beautifully emotional, intimate, and devoted note to her husband. I also found the flirtatious letters between her and her "Dolphin" to be exquisite, stimulating all sorts of questions and curiosities; as well as answering a few.
I've never seen "The Hours," and I doubt that I ever will. This book has provided me with such an intimate connection to the writer, that her own self-image is cemented into my vision of her and her life; so much so, that any actor's portrayal of her could never be up to par with the real thing (no matter how good they are).
Woolf's letters are intensely vast in number, and I seem to be going at them in a rather unconventional way. You see, I've started out in reverse. I'm currently on the look out for a cheap paperback copy of volume five, so I can move forward/backward, and continue to dive further into the depths of Woolf's psyche.
If you're at all considering it, read Woolf's letters.