So happy it won. I've said before that Fallout NV is really the only (console) game this generation that I consider to be a Roleplaying game. Bioware used to be the last bastion of cRPGs, but now they seem content to do story-driven action/adventure games where your stats don't matter and you get a simple choice via dialogue at the end of each dungeon/shooter-level.
Fallout 3 and Oblivion are good, but are also super linear - which means (somewhat ironically) that roleplaying only really exists outside of main story-line. And your options for resolving quests are normally limited to violence or a single good/bad choice.
Fallout NV allows a real chance for your character to affect the main storyline, gives you multiple ways to finish most of the quests, has skill checks frequently for all sorts of reasons, has stats that matter and gives you a large logical world to explore.
I think that many people could use some help by getting hints on how to role-play from a guide. Since experiencing how the world responds to your character's behavior is such a large part of RPGs.
Not sure if it's just the collectors edition, but the guide has some character builds at the back (including goofy little stories) that give a selection of meta-game awesome characters and a few 'fun' roleplay characters.