I just wiped out the Van Graffs for the Brotherhood, because hell yeah power armor.

I'm not sure what my favorite is because it's been so long since I played 1 and 2. New Vegas is certainly superior to 3 but the DC Wasteland was pretty cool, especially dicking around in the National Mall. Too bad the story was weak.

I might actually play the New Vegas DLC which I've never really done in any game ever.