I loved the ending of Guild Wars: Nightfall.
It was cheesy, but great all the same and it's one of the only MMORPG's I actually enjoyed playing, great storyline, very little repetitive grind and a balls-tighteningly good ending. :lol:
Oh right, and the fact that you get to slay a massive GOD pretty much makes it worthwhile, and take on the army of an entire continent along with the undead armies of about 2 others.
Having all of that along with a fantastic ending pretty much made that game for me, it's one of my top 5. ^_^