Next Generation has an excellent piece, looking back on the history of game controllers, leading up to the Revolution's fascinating controller. They look at controller design, as well as the usage that some games wrest from the controllers. From the article: "There are ways to mess with the system; in Shadow of the Colossus, the player stabs a beast not by pressing the attack button but rather by letting go of it, making the violence a release, a consequence of the player's action. Still, there's not a lot of room for subtlety or nuance. The most subtlety you can get comes from analog control and state-shifting, and both of those are just jury-rigs to the system."