Had the best fallout moment ever with my level 6 unarmed character. I went after Davidson with a powerfist and he roughed me up as I ran around the room dodging the bumper sword and decking him with a half broken powerfist. I got down to less than one quarter health and since I am on hardcoe I charged him (his health was down pretty good too). Two blows later I had him on the ropes, but my health was down to one HP! He swung with the sword and somehow I moved and he missed. I timed a punch that landed to the back of his head and I watched as Davidson's head exploded on the kill cam. Then I looked at my one HP and thought about what makes Fallout so freaking awesome.
Definitely Black Mountain. My weapons were always weak and not up to the job but I had plenty of ammo, Rad-X, Rad-Away, Stimpacks and a few Stealthboys.