Ten years ago, when Nintendo introduced the N64 and its analog stick, the move created an industry-wide decision to use the analog (or control thumbstick) to control three-dimensional movement in videogames. After the N64 demonstrated its superior "free-movement" controls in Super Mario 64, it didn't take Sony very long to introduce their own version of a similar controller; the Dual Analog, which later evolved into the Dual Shock.
Ten years later, the same company is doing the exact same thing all over again: Introducing a revolutionary controller with the potential to create a lasting industry-wide trend. This time, however, things are slightly different from the last. While the Wii remote has more potential to create a newer, more immersive form of game control than the analog stick did, it is also harder to implement in games. Motion-sensitivity in games wasn't unheard of before the Wii, but it is only now that an active movement is being carried out to truly make it a standard in videogame control.
However, keeping in mind that 1:1 control cannot be achieved at this point in time and that high-definition resolutions are impossible on the Wii, one needs to look to other options to provide the illusion of realism.