I enjoyed Dragon Age Origins a lot, played the main game for about 77 hours, and then later got Awakening. Nevertheless, I wasn't really interested in Dragon Age 2, enjoyed the first one a lot, but wasn't yearning for a sequel.
But then I tried the demo, loved it. Combat was a hell of a lot better, the fighting animations were highly improved. And I really enjoy the more Mass Effectian dialogue sequences. So I guess it's back on the map for me.
Also, it seems being good at the beginning will make sure that Bethany survives, while she dies at the evil choices (or maybe it's a sex thing, I played the demo as evil male, and Bethany died, while as good female made the brother die), either way, I prefer Bethany and want her alive in the main game.