Crazy, Crazy, Crazy

 is a quest in Fallout: New Vegas.

Detailed walkthrough
A super mutant named Neil approaches you when you near his house. He asks you to help him bring down the Tabitha. Tabitha is a super mutant who rules over Black Mountain. You have to fight you way up the mountain. You will encounter many super mutants and Nightkins. It is quite a tough battle so bring lots of ammo and stimpaks with. Once you reach the summit you can talk to Neil and he will help you fight the rest of the way until you reach the Broadcasting room. Alternatively you can not talk to Neil and just venture on by yourself. Once you get to the broadcasting room enter it and go out the back door and look under the stairs and you will find the key to Tabitha's room. Pick it up head up the stairs, open the door and kill Tabitha.

Extra Details
When you fight your way up to Black Mountain you will encounter a Nightkin Sniper. Once you kill the sniper and loot his body you will find Annabelle on him.