Obsidian Entertainment have done of those video interview thingy's on GameSpot. Chris Parker, Feargus Urquhart, Chris Avellone and Ryan Rucinski (in that order) appear and talk about how they wanted to make an RPG which had a lot of cool action elements. Like there haven't been enough of those since Diablo was born. There's a lot of in-game footage too and they talk about the motivation, which apparently you choose yourself (revenge vs patriotism vs cowboy with guns).

Spotted @ RPGWatch