I recently played through fallout nv again because of the hype train and I personally believe that Lonesome Road is the best DLC in all of the fallout games purely because of one of the possible endings. The ending i am talking about is when you talk Ulysses off nuking the the mojave, the dialogue in this as well as the fact that he is supposed to be your greatest rival, your "equal" fighting side by side against a legion of marked men seemed like probably the most badass moment in Fallout NV.

I just want to have more badasses like Ulysses who have also made their mark on the wasteland just as you do and maybe even rival you as Ulysses did.