My favourite part of Dead Money is Dean Domino - not as a character, though I like him starting and ending a total prick. What I love is, when you meet him, if you select the 'Barter' option to talk him down, he will hate you forever. The diplomatic option is to let him feel superior, because he's a total prick. It's a nice prank for players used to seeing the stat-based options as the "right" ones, but more importantly, absolutely hilarious from a character perspective. He's such an asshole!