Oh man, I thought the ending was completely awesome.
Brotherhood of Steel helping me take out the Legion inside the Dam.
Boomers doing an air raid on the Legion.
Remnants dropping in and kicking ass.
And the Veteran Rangers doing an all out assault on the Legion.
Plus, the dialogue options with the Legate, and his dialogue, were very good. I was able to challenge him, 1 on 1, and I found the fight very satisfying. And considering I did many quests, the epilogue was full of content, very lengthy, and satisfying.
Compare that to Fallout 3's "LOL ROBOT, LOL U DIE" ending.
Hmm, all my NCR ending had was the bombing run (which I missed, /sigh). And I don't recall any long conversation with the Legate, so I guess I either didn't have the skills needed or picked the wrong choices. It was just a long slog through lots of Legion in/on the dam, and a big fight in the camp.
And then most of the ending slides were depressing (except Cass's)..... Followers lose, Novac loses (I thought I did the quests there, but apparently I could have defended them from the Legion?), everyone's annoyed with the NCR, etc, etc, etc.
/sigh
Didn't feel very heroic or successful.