Lately, I've heard and seen a lot of discussion regarding terrible book endings. This thread is a place to discuss the opposite. What are some of your favorite book/series endings?

*Note - Please remember to mark spoilers if you go into specifics!

A few off the top of my head:

Ender's Game by Orson Scott Card - AWESOME ending. I was totally surprised and did not see it coming.

1984 by George Orwell - This book had a terrifying ending and truly scared me.
Spoiler:
I loved it's negative tone and those last 4 words..."He loved big brother", gave me chills


Fevre Dream by George R. R. Martin - A genuinely touching ending.

My Sister's Keeper by Jodi Picoult - Another ending I was completely shocked by. It left me in tears.

Harry Potter series - I loved the ending, even the epilogue. It left me totally emotionally satisfied.