Unlike the anime, I really liked the ending to Blue Dragon.
After all that you have to go through, there is finally peace throughout the world. Blue Dragon is one of my favorite RPGs of all time, I wish they would have made another BD for the Xbox 360. Although, the one for DS was pretty good as well.
The ending of Final Fanstasy X. I loved it, but also hated it as well because it was so darn heartbreaking.