Games that HAVE satisfying endings

[Popadoo]

Portal 2 and inFamous 2 come to mind.
Portal 2 was simply mind-blowing. I don't think anyone was expecting it.
inFamous 2 wrapped it up very well and even had my tearing up a little.

 

[spartandude]

Fallout New Vegas

Mass Effect 1

Mass Effect 2

Mass Eff- Oh wait

DragonAge Origins

Witcher 2

Portal 1

Portal 2

Shivering Isles (minus the annoying crime glitch)

 

[him over there]

Well first of all when you have a satisfying ending it should be one that explains everything:
IN all seriousness though Kirby 64 had a pretty damn great ending, it wasn't super big idea amazingness but it was pretty sweet on its own:


Also Shadows of The Damned had one of the greatest cliffhangers ever in my opinion, and seeing Paula... actually I won't spoil it. You'll know when you see it.

 

[Squidbulb]

Heavy Rain. You can change the ending to suit your tastes. The happy ending, a sort of happy ending where one of the characters dies, the downer ending where everyone dies and the bad guy wins, whatever you want.

 

[hermes]

Infamous 1 and 2...