The most random thing I ever did in FO3 was take over Megaton, GTA-style. It took a really long time but eventually I rooted out all immediate resistance and left the rest of the people alive, exiting the city and coming back later. By then, everyone had forgotten about the murders and were walking over corpses like they weren't there o.o Then I took the pleasure of dumping the bodies and scattered remains off the walkways and concealing them behind buildings, Hitman-style. XD My character went from Ambassador of Peace to Vault Boogeyman in just thirty minutes of nonstop carnage! I regret killing Jericho though, he could have been useful. I also regret letting Dogmeat die in the chaos :'( Thank God for companion mods XP I left Jenny, Leo, Moira, and Moira's mercenary alive, so I still have the essential people sticking around to buy my junk and walk around aimlessly. Now that both Lucas (killed by Burke) and Moriarty are dead, I am technically in charge, though the townfolk won't admit it : D Now I'm trying to work my way back up to good Karma, although it will probably be a while. I don't regret killing Billy Creel though, because now I have his Headwrap and Merc Grunt Outfit, which are freaking awesome on a female character : D She's almost dressed like Rosie the Riveter now. I just need to steal a RobCo jumper and her look will be set.