and why?

I don't have a favorite New Vegas Faction yet, so I can not answer this question(game is new to me). But I'd love to see answers from other people.

NCR. Their President was literally a dog. Yeah, it's a pretty buggy game.

Let me get this straight. Your favorite faction is the NCR because their president is a dog?

I don't get it, in NV president Kimball is definitely humanoid.. is this some kind of Finnish joke or a reference to all men being dogs or did you experience a bug?

Anyhoo, my favorite faction in NV is me (the player character).

House or myself.
NCR are just a bureaucratic asses who want to bring back the old world which ended up in a nuclear war.
And when I see a slaver, there is no time for talking :)

Probably Khans as they are most traditional Fallout faction in NV. I hate Brotherhood of Steel and always have, I always found them out of place

I my case, it was a radroach. It's a pretty doggy game indeed.

Sure ya didnt have the wild west perk? -That does some weird in game stuff I hear!

An NCR soldier shot my dog. This was immediately followed by a quest update telling me that the President was dead and that I should report this to somebody important whose name I have now forgotten. I reloaded an earlier save, got to the same point, and this time the bastard wounded Cass before killing the dog. Still got the quest update, though. Read whatever you want into that, but I swear that that happened. The others I found either unlikeable or entirely forgettable, so yes.

...Independent.

Ah I didn't have that, for me it did happen that the Colonel (or whatever) you have to talk to to initiate the quest was wandering around at the other side of the map in a valley somewhere and whenever I spoke to him the quest immediately failed with the same update.

I've literally put 200 hours into this game and have never seen even one of these supposedly insane bugs other people see all the time. Also no Bethesda game has crashed on me, ever, other than a brief period with a bad patch in Fallout 3. I don't know if I maintain my PC better than most or just have insanely good luck.

Anyway...

I always appreciate the Brotherhood of Steel design-wise, and in New Vegas they have Veronica, so they win.

Gameplay wise I have done three playthroughs and sided with NCR, Independent and Caesar, in that order. I actually just started my fourth run so I can finally do the last two DLCs and side with Mr. House.

I don't really mind any of the factions except the Boomers. Screw the Boomers. I hate that they're pretty much essential to the other major factions. The mini-game to get there is BS, and they treat you as some type of lowly human being who has to "earn" their trust.

In every game I've played I've wanted to just murder them all, but that'd break a crap-ton of quests.

Pretty hard decision, they are all pretty great and fit the theme, even the minor ones like The Kings and The Boomers are pretty memorable

I think i'll go with myself though, making that dude shit himself and then throwing him off the famn is so satisfying.

My fav was Mr. House... until he wanted me to wipe out Brotherhood of Steel. I actually regret not doing that now.