Slightly off topic but what sort of adapter do you need to use the wireless controller with the pc?
I think Alpha Protocol does as well
Afaik any game that is 'games for windows' (says so on the top of the box).
I wouldn't recommend the pad for any FPS or strategy games but adventure games work well on it (such as Assassin's Creed).
Also racing games cannot be played on the keyboard as there is no pressure sensitivity, you are either on the gas or not.
I think 'Games For Windows' games can choose to have no pad support at all. But if they do have pad support then it needs to have 360 pad support.