Bioware need I say more?
The voice acting, and dialog in this game is second to none, you will care for, and genuinely hate the well done characters in this great game. I personally have never hated a character more, than I do the main villain in Dragon age Origins, I literally frothed at the mouth waiting for the very moment I could end his existence.
You can loose yourself into this amazing action rpg, it's the type of game that you will play, and replay for years to come. With all the different races, classes, male, and female characters the stories for each deserve a play through.
Gameplay is fun, loot is great, so many cool weapons, and armor! The customization of your party members is as smart, as it is excellent, you can set up many different party formations, tank, healer, damage dealer, ranged, what ever suits your style of play, or takes advantage of each character's strengths, which also you can tailor how you want.
Dragon Age Origins is a must own game, one of the best, if not thee best game to come out this year.