WARNING: SPOILERS IN THE COMMENT THREAD I SHOULD IMAGINE. OKAY THEN.
Anyway, I was just having a chat with my cat about all the games that have terrible endings, and I said that I honestly couldn't think of any game endings that I really liked or respected, no, not even the Portal ones. And so he mentioned that he knew I was lying, because I liked the end of Hired Guns and also Grim Fandango. And he was right. Bloody cat.
So then: let's see if we can come up with a definitive best ending? Any suggestions?