In Fallout 3, Bethesda knew what all the sane players would eventually want and gave an option to blow Three Dog's brains out. Obsidian did not. Boy,what I would give for getting my hands on Mr. New Vegas and finally have a radio station without his voice after every song. But I can't find him and the wiki says he can't be found in the game. Guess Obsidian are big Newton fans.