The art of humour in a videogame. Not something you see very often and even then, not something you see done right. Yet Obsidian nails it so well that it's at the forefront of our mind as we walk out of a morning's hands-on.
We could linger on the solid control of the cover and shoot combat, talk about the extensive character customisation list that'd have the average Fallout fan shivering in anticipation, or discuss the amalgamation of espionage thriller and RPG. But no. What stuck in the brain was the quality of the dialogue.