Obviously depends on what you mean by "this generation". But like, past 5 years - Dragon Age Origins, Mass Effect (at least 1 and 2), probably Portal 2. Certainly none of the FPSs except maybe TF2, if it's still going. Maybe Arkham Asylum. The Witcher 2, definitely. StarCraft II, unless StarCraft III comes out by then.
I think these are most of them. I think most modern games are pretty awful, because it is absolutely impossible to make a good story about war without recognizing the actual value of human life/attempt to reason why enemies do what they do (i.e., all modern shooters completely fail to do that), and it's impossible to make a good multiplayer FPS without rocket jumps. Which, again, means most modern shooters completely fail to do that.