s voice

The Samsung Galaxy S III may not be available in its biggest market just yet, but the rest of the world is enjoying, and finding helpful tidbits like this one that makes the home button respond better. You can set the home button to start up S Voice when double-pressed, but that means the system has to wait and make sure what you want it to do if you only press it once -- resulting in a pause. We've seen the same behavior any time an OEM decides to add functionality to a button with a double-tap, but this time its easy to fix. Just disable it in the S Voice settings and you're home free.

This, and more in the Galaxy S III forums