Here's one of X-play's all access previews for Fallout New Vegas

http://g4tv.com/videos/48176/Fallout-New-Vegas-All-Access-Preview/

No spoilers just some basic info we all probably know
I just found it interesting cause you hear some NPC voices in this

(off topic: I LOVE X-play. If you have G4 on your tv and you dont already watch it its a great show)

http://www.gamesas.com/index.php?/topic/1111618-new-g4tv-video-preview/, and has been mentioned in a few threads.