Just a word of warning, if you haven't bought Fallout New Vegas yet and were thinking about it, don't. Or, at least, wait.
The game is out on PC, Xbox 360 and PS3. All versions are buggy but the PC version is far and away the worst one. Random crashes, stuttering, save file corruptions just to name a few. Have a look at the Bethsoft PC forum and see for yourself the issues people are having.
I purchased the PC version and have been fighting with issues for a while now. Only a fix from the COMMUNITY involving a direct x 9 dll file made the game remotely playable for me.
Why they released a game in this state is beyond me, it's absolutely mind boggling.
If you want the game, wait. Whether you want the console or PC version. At least a couple of weeks until the bugs (hopefully) get fixed.