I don't want to be spoilery but I strongly encourage everyone to visit Vault 11.  I had to rest for a moment and stare at the wall after I finished exploring it.
It was completely disturbing.

hey guys I made a thread to talk about that one thing then to not talk about that one thing

thats the one with plant people? yeah i thought it was kinda disturbing too

If you make a thread titled "Vault 11" and someone comes in and gets Vault 11 spoiled then it's their own fault.

Sorry kids... have a cookie. 
 
Ok, SPOILERS
 
So, first you walk in and there's this tape and you pick it up and there's like 4 or five people talking.
 They know something, something suspicious and they are not happy about it.
Then, someone says, "So, are we gonna do it?" and everyone agrees., "Yes, yes..."
Suddenly, this one guy speaks up and exclaims something like "No! No I don't think this is a good idea..." and then you hear blam, blam, blam, blam!

I'll make a note to visit it next time I play New Vegas.

.....
 As you continue your exploration of the vault, you notice that there's hundreds of election campaign posters for Overseer everywhere. 
Dead bodies are strewn about and you are led to believe that an inner vault battle has occurred. 
You pick up more information and soon discover a note or something that says that elections will no longer be acceptable and there will be a random lottery for the next Overseer...
 
and that's as far as I'm going.

 
must have missed it, though i thought i went everywhere. 

Yeah, they adapted the story The Lottery into a vault. There are also references to Most Dangerous Game and Lord of the Flies in there. Obsidian payed attention to 11th grade english.

Vault 11 is like a dark and twisted short story.  Classic Fallout stuff.
 
If anyone wants the spoilers on Vault 11, just google "Vault 11".

For anyone who cares but doesn't want to play the game, here's the entire rundown:  

" Yeah, they adapted the story The Lottery into a vault. There are also references to Most Dangerous Game and Lord of the Flies in there. Obsidian payed attention to 11th grade english. "

Wow, that was really neat. At first I didn't think it was anything special, but the walk down the bright hallway and the video were really neat. I was especially freaked out when the video went completely black after the narrator finished, the doors on either side slowly opened, and I got decimated.

This is the only vault in the game that I liked, the others are decent but there isn't more lore in those vaults. Plus the sacrificial chamber caught me off-guard and I barely escaped that part.

Found this when I was just looking around places I havnt been yet. Was kind of suprised it wasnt a side mission of its own it was really good.

" Yeah, they adapted the story The Lottery into a vault. There are also references to Most Dangerous Game and Lord of the Fliesin there. Obsidian payed attention to 11th grade english. "

Yeah I loved this bit...this is why I think this game will be better remebered in time.  There are so many interesting examples of story telling all over the world which you can only really experience on a 100 hour plus playthrough which reviewers don't have time for. 

The horrible part was... 
 

STOP GIVING ME STUFF TO DO IN THAT GAME!  
 
I swear, im 40 hours in and still have so much stuff I want to do. 

The best bit was when one of the robots was randomly allied to Mr. House and killing it failed all further missions for him, forcing you to reload. Oh wait no, that sucked. I agree it was a good quest other than that though!